This is a list of convoy codes used by the Allies during World War II There were over 300 convoy routes organized, in all areas of the world; each was designated by a two- or three letter code. List of Allied convoys during World War II by region provides additional information.
__NOTOC__
A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
A
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| AB || Miscellaneous || Sep 1939 to May 1940 ||
|-
| AB || Aden to Bombay || Sep 1942 to Oct 1944 || Slow convoys
|-
| ABF || Aden to Bombay || 1944 to Feb 1945 || Fast troop ship convoys
|-
| ABS || Algiers to Bougie, French North Africa || Nov 1942 || Single convoy; after Operation Torch
|-
| AC || Aden to Colombo || ??? ||
|-
| AC || Alexandria to Bengazi or Tobruk || Feb 1941 to Apr 1941 || "Alexandria to Cyrenaica"
|-
| AG || Alexandria to Greece || Mar 1941 to Apr 1941 || Military supply convoys; during the period of the German Operation Marita invasion of Greece
|-
| AH || Aruba to Halifax || Jul 1942 to Sep 1942 || Three tanker convoys; reverse HA
|-
| AH || Malta or Augusta to Italy || Oct 1943 to Jan 1945 || Reverse HA
|-
| AH || Bari to Ancona in Italy || Jan 1945 to May 1945 ||
|-
| AJ || Aden to Colombo || Jan 1942 to Feb 1945 || "Aden to Jafna"; reverse JA
|-
| AK || Aden to Kilindini || Sep 1940 to Aug 1944 || Reverse KA
|-
| AKD || Aden to Kilindini, then Durban || Sep 1943 to Apr 1944 || 27 convoys; reverse DKA
|-
| AM || Chittagong to Madras || Mar 1944 to Mar 1945 || Reverse MA
|-
| AM || Algiers or Oran to the south of France || Aug 1944 to Oct 1944 || For Operation Dragoon
|-
| AN || Alexandria or Port Said to Piraeus or Souda Bay || Sep 1940 to May 1941 || "Aegean Northbound"; reverse AS
|-
| AN || Admiralty Islands to New Guinea || Apr 1944 to Aug 1944 || Following Operation Brewer; reverse NA
|-
| ANF || Alexandria to Piraeus || 1940 to 1941 || "Aegean Northbound Fast"
|-
| AP || UK to Egypt || Aug 1940 to Oct 1940 || Three troopship convoys; during the start of the Western Desert Campaign
|-
| AP || Aden to Persian Gulf || Sep 1942 to Feb 1945 || "Aden to Persian Gulf"; 92 convoys; reverse PA
|-
| ARG || Boston to New York City or Argentia, Newfoundland || Oct 1942 to Sep 1944 ||
|-
| ARM || Mediterranean local traffic || Aug 1944 to Oct 1944 || Following Operation Dragoon
|-
| AS || Piraeus to Alexandria || Jun 1940 to May 1941 || "Aegean Southbound"; reverse AN
|-
| AS || New York to Suez || Mar 1942 to Jan 1943 || "America–Suez"
|-
| AT || Alexandria to Tobruk || Nov 1941 to Jun 1942 || 46 convoys; reverse TA
|-
| AT || United States to UK || Jan 1942 to Jul 1945 || Troopship convoys; reverse TA
|-
| AT || Ancona and Trieste || Jun 1945 || Italian east coast route; 2 convoys
|-
| ATM || Antwerp to Thames || Dec 1944 to Jun 1945 || "Antwerp to Thames Military"; 154 military convoys
|-
| AW || Aruba to Curaçao || Sep 1942 to Jul 1944 || "Aruba to Willemstad"; Local tanker convoys; reverse WA
|}
B
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| BA || Bombay to Aden || Feb 1941 to Sep 1944 || Reverse AB
|-
| BAF || Bombay to Aden || Sep 1944 to Jan 1945 || Fast troopship convoys; reverse ABF
|-
| BB || Belfast to Milford Haven || Jan 1941 to May 1945 || 432 convoys
|-
| BB || Clyde to Bristol Channel || 1945 ||
|-
| BC || African routes || Jun 1940 to Jun 1940 || British special convoys
|-
| BC || Charleston, SC, to Bora Bora || Jan 1942 to Feb 1942 || Single convoy; to reinforce US forces in the Pacific after Pearl Harbor
|-
| BC || Beira to Durban || Jul 1943 to Aug 1944 || "Biera to Cape", reverse CB
|-
| BC || Bombay, India, to Colombo, Ceylon || Sep 1943 to Aug 1945 ||
|-
| BC || Clyde to Bristol Channel || 1945 ||
|-
| BCS || Cape Town, South Africa to Freetown, Sierra Leone || Jun 1940 to Jul 1940 || Single convoy
|-
| BD || White Sea to Dikson || Jul 1941 to Sep 1944 || Reverse DB
|-
| BEC || Bristol Channel to France || Oct 1944 to Dec 1944 || Reverse EBC
|-
| BF || Bahia to Freetown || 1943 to 1945 || Under US Navy escort; reverse FG
|-
| BG || Milne Bay to New Guinea || Jul 1944 to ??? || Reverse GB
|-
| BG || Brisbane to Gladstone || Jan 1943 to Jul 1944 ||
|-
| BG || Biak to Morotai or Morotai to Hollandia || Nov 1944 to Jan 1945 ||
|-
| BHX || Bermuda to HX rendezvous || May 1940 to Jul 1941 || 82 feeder convoys
|-
| BK || Bombay to Karachi || Jan 1943 || Single convoy (BK.1); reverse KB
|-
| BK || White Sea to Kola || 1943 to 1945 || Reverse KB
|-
| BLUE || Port Said to Gibraltar || Sep 1939 to Nov 1939 ||
|-
| BM || Bombay to Singapore || Sep 1940 to Feb 1942 || 16 convoys
|-
| BM || Karachi or Bombay to Colombo || Feb 1942 to Dec 1944 || Reverse MB
|-
| BN || Bombay to Aden or the Suez Canal || Jun 1940 to Apr 1941 || "Bombay Northward"; 33 convoys
|-
| BN || Cape Gloucester, New Britain to Langemak Bay, New Guinea or Guadalcanal || Apr 1944 to Jun 1944 || Reverse NB
|-
| BP || Bombay to Persian Gulf || Apr 1941 to Feb 1945 || Reverse PB
|-
| BRN || Bahia to Recife || 1942 to 1945 || "Bahia to Recife Northward"
|-
| BS || Suez to Aden, often for dispersal || Jun 1940 to Apr 1941 ||
|-
| BS || Corner Brook to Sydney || 1942 to 1945 || Reverse SB
|-
| BS || Brest to Casablanca, Morocco || Sep 1939 to Jun 1940 ||
|-
| BT || Bahia, Brazil to Trinidad || Jan 1943 to Jul 1943 || Reverse TB
|-
| BT || Sydney, Nova Scotia to United States (east coast) || 1943 to 1945 || Troopship convoys
|-
| BT || Brisbane to United States || Jan 1942 to Jun 1943 || Reverse TB
|-
| BT || Brisbane to Townsville, Australia || Aug 1942 to May 1943 ||
|-
| BTC || Milford Haven and the Bristol Channel to Thames || Dec 1941 to May 1945 || 165 convoys; reverse TBC
|-
| BV || Brisbane to Townsville || May 1943 to Jul 1943 || Reverse VB
|-
| BW || Sydney, Nova Scotia to Saint John's, Newfoundland || Sep 1942 to May 1945 ||
|-
| BX || Boston to Halifax || Mar 1942 to May 1945 || 206 convoys; reverse XB
|-
| BZ || Bombay to Kilindini and Aden || ??? ||
|}
C
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| C || Colombo, Ceylon to dispersal || Apr 1942 to Jun 1943 ||
|-
| CA || Cape Town, South Africa to dispersal || Dec 1942 to Jun 1943 ||
|-
| CB || Durban to Beira and beyond || Jul 1943 to Aug 1944 || Reverse BC
|-
| CD || Cape Town to Durban || Nov 1942 to Aug 1944 || Reverse DC
|-
| CE || St Helen's Road, Isle of Wight, to Southend || Jul 1940 to May 1944 || "Channel Eastward"; 262 British coastal convoys; reverse CW
|-
| CF || Cape Town to Freetown and ultimately the UK || Apr 1941 to Oct 1943 ||
|-
| CF || Colombo to Fremantle || Mar 1941 to ??? || Fast liners
|-
| CG || Casablanca to Gibraltar || 1943 to May 1945 || Originally FT convoys; reverse GC
|-
| CH || Chittagong to Calcutta || Feb 1944 to Jan 1945 || Reverse HC
|-
| CJ || Calcutta to Colombo || Apr 1943 to Jan 1945 || Reverse JC
|-
| CK || Havana, Cuba to Key West || Oct 1942 to Aug 1943 || "Cuba to Key West"
|-
| CK || Charleston to UK || Jan 1944 to Nov 1944 ||
|-
| CL || St. John's to Sydney or Halifax, Nova Scotia || Feb 1942 to Jun 1943 || Reverse LC
|-
| CM || Cape Town or Durban via Kilindini, Kenya to Red Sea ports || Mar 1940 to Apr 1945 || "Cape Military"; military convoys; reverse MC
|-
| CMA || Durban to Mombasa || Jun 1940 to Jul 1940 || Single convoy within CM
|-
| CN || North from Cape Town for dispersal || Jan 1943 to Jun 1944 || "Cape Town Northward"
|-
| CNF || Sicily Invasion Force || Jun 1943 to Jul 1943 || Fast convoys; Operation Husky
|-
| CO || Newcastle to Melbourne and Adelaide || Jun 1942 to Dec 1943 || 150 convoys; reverse OC
|-
| COC || Plymouth to Brittany || Nov 1944 to May 1945 || Military convoys using coasting vessels; for the delivery of military supplies
|-
| CP || Curaçao to Panama Canal || 1942 || Tanker convoys
|-
| CRD || Casablanca to Dakar || May 1944 to Oct 1944 || Reverse DRC
|-
| CT || UK to Canada || Aug 1941 to Jun 1942 || Troopship convoys; reverse TC
|-
| CT || Corsica via Sardinia to Bizerta || 1944 || Reverse TC
|-
| CT || Cristobal, Panama, to Trinidad || Jun 1942 || Single convoy (CT.1)
|-
| CU || Curaçao (or New York) to UK || Mar 1943 to Jun 1945 || "Curaçao to the UK"; 8 tanker and 74 troopship convoys; reverse UC
|-
| CV || Cyrenaica (Tobruk) to Valletta (Malta) || 1944 || Reverse VC
|-
| CW || Cristobal to Key West || Jul 1942 || "Cristóbal to Key West"; two convoys
|-
| CW || Southend to St Helen's Roads and Yarmouth, Isle of Wight, and then Falmouth } || Jul 1940 to Jun 1944 || "Channel Westward"; 270 coastal convoys; reverse CE
|-
| CX || Colombo to Addu Atoll || Apr 1943 to Feb 1945 ||
|-
| CZ || Curaçao to Cristobal || Sep 1942 to Feb 1943 || "Curaçao to Panama Canal Zone"; reverse ZC
|}
D
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| D || Dakar to Casablanca || 1939 to 1940 ||
|-
| DB || Southern England to north-western France || Sep 1939 to Oct 1939 ||
|-
| DB || Dikson to White Sea || 1942 to 1944 || Reverse BD
|-
| DB || Durban, South Africa, for dispersal || May 1943 || One convoy (DB.38)
|-
| DBF || Dakar via Bathurst to Freetown || 1943 ||
|-
| DC || Durban to Port Elizabeth or Cape Town || Dec 1942 to Sep 1944 || Reverse CD
|-
| DF || Clyde to Faroes || ??? || Military ferry convoys; reverse FD
|-
| DG || Thursday Island to Merauke || ??? || Reverse GD
|-
| DK || Durban to Kilindini || Sep 1943 to Sep 1944 || Reverse KD
|-
| DKA || Durban via Kilindini to Aden || Sep 1943 to Jun 1944 || Reverse AKD
|-
| DLM || Durban to Lourenço Marques || Jul 1943 to Jun 1944 || Reverse LMD
|-
| DM || Durban to Malaya || Jan 1942 to Mar 1942 || Three convoys
|-
| DN || Darwin northwards || Jul 1944 to Sep 1945 ||
|-
| DN || Durban for dispersal || Nov 1942 to Mar 1945 || "Durban Northward"
|-
| DR || Dakar to Gibraltar or Casablanca || Apr 1944 to Oct 1944 ||
|-
| DRC || Dakar to Casablanca || Mar 1945 to Apr 1945 || Reverse CRD
|-
| DS || Clyde to Reykjavík || Apr 1941 to May 1945 || Military ferry convoys; reverse SD
|-
| DSF || Dakar to Freetown || Feb 1944 to Jul 1944 || Reverse FSD
|-
| DSL || Dakar via Freetown to Lagos || ??? || Reverse LSD
|-
| DSP || Dakar via Freetown to Pointe Noire || ??? || Reverse PAD
|-
| DST || Dakar via Freetown to Takoradi || ??? || Reverse TSD
|-
| DT || Darwin to Thursday Island || Feb 1943 to Sep 1944 || Reverse TD
|-
| DWI || Dutch West Indies to UK || 1943 || Not used
|}
E
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| E || Trinidad to dispersal || Jun 1942 to Aug 1942 || During Operation Paukenschlag
|-
| EBC || Bristol Channel to France || Jun 1944 to Oct 1944 || 126 military coastal convoys; reverse FBC
|-
| EBM || Clyde River or Milford Haven to southern England or Seine Bay, northern France || Jun 1944 || 5 military convoys
|-
| EC || Southend to Clyde River, Oban and Loch Ewe || Mar 1941 to Nov 1941 || 90 coastal convoys
|-
| ECM || Falmouth to Seine Bay, northern France || Jun 1944 to Jul 1944 || Motor transport convoys; during Operation Overlord
|-
| ECP || Portland to Seine Bay || Jun 1944 to Jul 1944 || Personnel convoys; reverse FCP
|-
| EMM || Belfast to France || Jun 1944 to Jul 1944 || Three motor transport convoys; during Operation Overlord
|-
| EMP || Belfast to France || Jul 1944 || Personnel convoys; during Operation Overlord
|-
| EN || Methil to Clyde River and later Loch Ewe || Aug 1940 to May 1945 || 595 coastal convoys
|-
| EPM || Portland via the Solent to France || Jul 1944 to Sep 1944 || Motor transport convoys; related to Operation Overlord; reverse FPM
|-
| EPP || Portland via the Solent to Seine Bay, France || Jul 1944 to Sep 1944 || Personnel convoys; related to Operation Overlord; reverse FPP
|-
| ET || North Africa to Gibraltar || Nov 1942 to Jul 1943 || After Operation Torch
|-
| ETC || Southend to Seine Bay, France || Jun 1944 to Oct 1944 || Coastal convoys; reverse FTC; companion to EBC
|-
| ETM || Southend to Seine Bay, France || Jun 1944 to Oct 1944 || Motor transport convoys; reverse FTM
|-
| EWC || Spithead to Seine Bay, France || Jun 1944 || Coastal convoys; reverse FWC
|-
| EWL || Southampton or Isle of Wight to Seine Bay, France || Aug 1944 to Sep 1944 || Landing craft convoys; reverse FWL
|-
| EWM || Isle of Wight to Seine Bay, France || Sep 1944 to Oct 1944 || Motor transport convoys; related to Operation Overlord; reverse FWM
|-
| EWP || Isle of Wight to Seine Bay, France || Jun 1944 || Personnel convoys; related to Operation Overlord; reverse FWP
|-
| EXP || UK to Seine Bay, France || Jun 1944 || Operation Overlord invasion forces; reverse FXP
|}
F
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| FB || Freetown to Bahia || 1943 to 1945 || Reverse BF
|-
| FBC || Seine Bay to Bristol Channel || Jun 1944 to Oct 1944 || Military convoys; return convoys from Operation Overlord; reverse EBC
|-
| FBM || Seine Bay to Falmouth or the Bristol Channel || Jun 1944 || Military convoys returning empty from Operation Overlord; reverse EBM
|-
| FBP || Seine Bay to Portland || Jun 1944 || Single personnel convoy (FBP.1B) returning empty from Operation Overlord
|-
| FC || France to West of England || 1944 ||
|-
| FC || Fall River, New Guinea, to Cairns, Australia || Feb 1943 to May 1943 || Military convoys
|-
| FCM || Seine Bay to the south-western UK || Jun 1944 to Jul 1944 || Military convoys; return empty vehicle and equipment vessels from Operation Overlord for reloading; reverse ECM
|-
| FCP || France to the south-west of England || Jun 1944 to Jul 1944 || Military convoys; personnel counterparts to FCM; reverse ECP
|-
| FD || Faroes to Clyde || Mar 1943 || Single military convoy (FD.3); reverse DF
|-
| FF || UK and northwestern France || Jun 1940 || Troop and evacuation convoys
|-
| FFT || Freetown to Trinidad || 1942 to 1943 || Reverse TF
|-
| FG || Fremantle to Adelaide || 1942 to 1945 || Reverse GF
|-
| FH || Saint John to Halifax || Sep 1942 to May 1945 || Reverse HF
|-
| FJ || Florianópolis to Rio de Janeiro || ??? || Reverse JF
|-
| FM || Milne Bay to Port Moresby || Jan 1944 to Jun 1944 || Two convoys; reverse MF
|-
| FN || Thames to Forth || Sep 1940 to Jun 1945 || "Forth North"; 1,660 coastal convoys; reverse FS
|-
| FP || Britain to Norway || Apr 1940 to May 1940 || Three troop ship convoys
|-
| FPM || France to Portland || Jul 1944 to Sep 1944 || "France to Portland"; military motor transport convoys returning after delivery to land campaign following Operation Overlord
|-
| FPP || France to Portland || Jul 1944 to Aug 1944 || "France to Portland"; military personnel convoys returning after delivery to land campaign following Operation Overlord; reverse EPP
|-
| FS || Forth to Thames || Sep 1939 to May 1945 || "Forth South; 1,778 coastal convoys; reverse FN
|-
| FS || Scapa Flow to Norway, and Best, Netherlands to Namsos, Norway || Apr 1945 to May 1945 ||
|-
| FSD || Freetown to Dakar || Apr 1944 to Oct 1944 || Reverse DFS
|-
| FT || Fall River, Papua, and Townsville, Queensland || Jun 1943 to Dec 1943 ||
|-
| FT || Freetown, Sierra Leone, to Trinidad || Jul 1943 || Central Atlantic convoys
|-
| FTC || Seine Bay, France to Southend on the Thames river || Jun 1944 to Sep 1944 || "France to Thames Coaster"; 122 military supply convoys; reverse ETM
|-
| FTM || Seine Bay, France to Southend on the Thames river || Jun 1944 to Sep 1944 || "France to Thames Military"; 91 military motor transport convoys; after deliveries for Operation Overlord and follow-on operations; reverse ETC
|-
| FWC || France to Isle of Wight || Jun 1944 || Military coaster convoys; after deliveries for Operation Overlord; reverse EWC
|-
| FWL || France to Isle of Wight || Jul 1944 to Sep 1944 || Landing craft convoys; delivery back to the UK after Operation Overlord; reverse WEL
|-
| FWM || France to Isle of Wight || Jun 1944 to Sep 1944 || Military motor transport convoys; after deliveries for Operation Overlord; reverse EWM
|-
| FWP || France to Isle of Wight || Jun 1944 to Sep 1944 || Military personnel convoys; after delivering troops for Operation Overlord; reverse EWP
|-
| FXP || France to UK || Jun 1944 to Oct 1944 || Military convoys; after delivering troops and equipment for Operation Overlord
|}
G
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| G || Guantanamo to San Juan || Sep 1942 to Apr 1944 ||
|-
| GAT || Guantanamo via Aruba to Trinidad || Aug 1942 to May 1945 || 209 convoys; reverse TAG
|-
| GB || New Guinea (Southwest Pacific Area) to Milne Bay || Jul 1944 to May 1945 || Reverse BG
|-
| GC || Gibraltar to Casablanca || Mar 1943 to Apr 1945 || Originally TF convoys, after Operation Torch; reverse CG
|-
| GD || Merauke, Netherlands New Guinea, to Thursday Island, Australia || 1944 to Aug 1945 || Reverse DG
|-
| GF || Adelaide to Fremantle, Australia || 1942 to 1945 || Reverse FG
|-
| GI || New Guinea to Philippines || Jan 1945 to May 1945 || Reverse IG; supported the US "Love", "Mike", and "Victor" operations in the Philippine islands group
|-
| GJ || Guantanamo to Kingston, Jamaica || ??? || Reverse JG
|-
| GK || Guantanamo to Key West || Sep 1942 to May 1945 || 163 convoys; reverse KG
|-
| GM || Gibraltar to Malta || Jul 1941 to Jun 1942 || Reverse MG
|-
| GM || Galveston, TX to the Mississippi River || ??? || Reverse MG
|-
| GN || Guantanamo to New York || Aug 1942 to May 1945 || 207 US coastal convoys; reverse NG
|-
| GP || Guantanamo to the Panama Canal || Jul 1942 to Aug 1942 || Reverse PG
|-
| GP || Sydney to Townsville and Brisbane, Australia || Jun 1942 to Feb 1944 || Reverse PG
|-
| GP || Galveston to Pilottown, MS || 1942 to 1945 || Reverse PG
|-
| Green || Gibraltar to Alexandria or Port Said, Egypt || Sep 1939 to Oct 1939 ||
|-
| Greyback || Dieppe, Seine-Maritime to Newhaven, East Sussex || ??? || British military ferry convoys
|-
| GS || Greenland to Sydney, Nova Scotia or St. John's, Newfoundland and Labrador || Jul 1942 to Jun 1945 || Reverse SG
|-
| GS || Grimsby to Southend || Mar 1940 to Apr 1940 || Reverse SG
|-
| GT || Gladstone, Queensland to Townsville || Dec 1942 to Jun 1943 ||
|-
| GTX || Gibraltar via Tripoli to Alexandria or Port Said || May 1942 to Aug 1943 || "Gibraltar, Tripoli and Alexandria"
|-
| GUF || Oran, Algeria (later Naples, Italy) to the Chesapeake Bay || Nov 1942 to Apr 1945 || 25 fast military ocean convoys; started after the implementation of Operation Torch; reverse GUS
|-
| GUS || Port Said, Egypt or Oran, Algeria (later Naples, Italy) to the Chesapeake Bay || Dec 1942 to Jun 1945 || 98 slow military ocean convoys; started after the implementation of Operation Torch; reverse GUF
|-
| GZ || Guantanamo to Canal Zone || Aug 1942 to May 1945 || Reverse ZG
|}
H
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| HA || Halifax to Aruba or Curaçao || Jul 1942 to Aug 1942 || 4 convoys; reverse AH
|-
| HA || Bari or Ancona in southern Italy to Malta || Aug 1942 to Dec 1944 || Reverse AH
|-
| HA || Ancona to Bari, Brindisi or Barletta in southern Italy || Jan 1945 to May 1945 ||
|-
| HB || Australia to India and the Red Sea || Jan 1945 || Single troopship convoy
|-
| HC || Calcutta to Chittagong, India || Oct 1943 to Dec 1944 || Reverse CH
|-
| HF || Halifax to Saint John, New Brunswick || Sep 1942 to May 1945 || Reverse FH
|-
| HG || Gibraltar or Port Said to Liverpool in the UK || Sep 1939 to Sep 1942 || "Homeward from Gibraltar"; 117 slow and fast convoys; reverse OG; after Operation Torch replaced by MKS series
|-
| HGY || Gibraltar or Port Said to Liverpool || Jul 1940 || Single convoy
|-
| HGZ || Gibraltar to join the SL.36 convoy to the UK || Jun 1940 to Jul 1940 || Single convoy
|-
| HHX || Halifax to join HX convoys from New York at the Halifax Ocean Meeting Point || ??? ||
|-
| Hi|| Japanese mercantile convoys between Singapore and Moji || Jul 1943 to Feb 1945 ||
|-
| HJ || Halifax to St. John's || May 1942 to Apr 1945 || Reverse JH
|-
| HJF || Halifax to St. John's || Jan 1944 to May 1945 || Fast convoys
|-
| HK || Galveston or Pilottown, MS to Key West, FL || Sep 1942 to May 1945 || 183 convoys; reverse KH
|-
| HM || Holyhead to Milford Haven, Wales || Dec 1941 to Feb 1943 || Reverse MH
|-
| HN || Bergen, Norway to Methil, Firth of Forth || Oct 1939 to Apr 1940 || "Homeward from Norway"; 28 convoys; reverse ON
|-
| HON || Halifax to join ON convoys at the Halifax Ocean Meeting Point || ??? ||
|-
| HP || Heel of Italy to Piraeus, Greece || Oct 1944 to Mar 1945 || "Heel to Piraeus"; reverse PH
|-
| HS || Halifax to Sydney, Nova Scotia || May 1942 to May 1945 || Reverse SH
|-
| HT || Halifax to Trinidad || May 1942 to Jun 1942 || "Halifax to Trinidad"; reverse TH
|-
| HX|| Halifax and New York City to Liverpool || Sep 1939 to Jun 1945 || North Atlantic route; fast convoys; reverse ON
|-
| HXA || HX ships via English Channel || 1939 to 1945 ||
|-
| HXF || Halifax to Liverpool or Dover in the UK || Sep 1939 to Feb 1940 || 17 fast convoys
|-
| HXM || New York City to Liverpool || 1939 to 1945 || Medium speed convoys
|-
| HXS || New York City to Liverpool || 1939 to 1945 || Slow convoys
|}
I
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| IG || Philippines to New Guinea || Jan 1945 to Mar 1945 || Reverse GI
|-
| IKO || Manila, Philippines to Hollandia, New Guinea || Apr 1945 to May 1945 ||
|-
| IXF || Naples and Taranto, Italy, to Alexandria and Port Said, Egypt || Sep 1943 to Dec 1944 || Reverse XIF
|}
J
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| JA || Colombo to Aden || Feb 1944 to Feb 1945 || Reverse AJ
|-
| JC || Colombo to Calcutta and other ports in India || Jul 1942 to Mar 1945 || 124 convoys; reverse CJ
|-
| JF || Rio de Janeiro to Florianópolis || ??? || Reverse FJ
|-
| JG || Kingston to Guantanamo || ??? || Reverse GJ
|-
| JH || St. John's to Halifax || May 1942 to Apr 1945 || "St John's to Halifax"; reverse HJ
|-
| JM || India, via Kilindini, Kenya to Madagascar || May 1943 to Jun 1944 || 2 convoys
|-
| JM || India to Malaya invasion || Aug 1945 to Sep 1945 || Assault convoys for Operation Zipper; 'JMA', 'JMB', 'JME', 'JMF' and 'JMG' convoys
|-
| JN || St. John's to Labrador || Jun 1942 to May 1944 || Reverse NJ
|-
| JR || Rio de Janeiro to Recife, Brazil || ??? || Reverse RJ
|-
| JS || Colombo to Singapore || Feb 1942 || "Colombo to Singapore"; reverse SJ
|-
| JT || Rio de Janeiro to Trinidad || Jul 1943 to Mar 1945 || "Rio de Janeiro to Trinidad"; 70 convoys; reverse TJ; successor to BT convoys
|-
| JW|| Loch Ewe, Scotland via Iceland to ports of the northern USSR || Dec 1942 to May 1945 || 22 convoys; reverse RA; successor to PQ convoys
|}
K
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| K || Casablanca to Brest, the Gironde estuary or Nantes, France, or Oran, Algeria || Oct 1939 to Jun 1940 || French convoys; included KF (fast) and KS (slow) components
|-
| KA || Kilindini to Aden || Nov 1942 to Dec 1943 || Reverse AK
|-
| KB || Kola to White Sea || 1943 to 1945 || Reverse BK
|-
| KB || Karachi to Bombay || Apr 1943 to Jun 1943 || Reverse BK
|-
| XX || Key West, Florida to Havana, Cuba || Oct 1942 to Aug 1943 || "Key West to Cuba"; reverse CK
|-
| KD || Kilindini to Durban || Oct 1940 to Mar 1945 || Reverse DK
|-
| KG || Key West to Guantanamo || Sep 1942 to May 1945 || 168 convoys; reverse GK
|-
| KH || Key West to Galveston and Houston, TX || Sep 1942 to May 1945 || "Key West to Houston"; 146 convoys; reverse HK
|-
| KJ || Kingston to the UK || Sep 1939 to Oct 1939 ||
|-
| KM || Kilindini to Diego Suarez, Madagascar || Jun 1942 to Feb 1945 || Reverse MK
|-
| KM || Karachi to Bombay || 1942 to 1945 ||
|-
| KMF || UK to the Mediterranean and occasionally onward || Oct 1942 to May 1945 || Fast convoys; reverse MKF
|-
| KMS || UK to the Mediterranean and occasionally onward || Oct 1942 to May 1945 || Slow convoys; reverse MKS
|-
| KN || Key West to New York || May 1942 to May 1945 || 210 coastal convoys; reverse KS
|-
| KP || Key West to Pilottown, MS || Sep 1942 to Jan 1943 || Reverse PK
|-
| KP || Karachi to Persian Gulf || Jul 1943 || Single convoy (KP.1)
|-
| KP || Kola to Petsamo || Oct 1944 to May 1945 || In support of the Petsamo-Kirkenes Strategic Offensive Operation
|-
| KR || Kilindini to Ceylon || Mar 1942 to Feb 1945 || Reverse RK
|-
| KR || Calcutta, India, and Arakan ports, Burma, to Rangoon, Burma || May 1945 to Aug 1945 || Reverse RK
|-
| KS || Casablanca to Brest || Sep 1939 to May 1940 || 73 slow convoys
|-
| KS || New York via Norfolk, Virginia to Key West || May 1942 to Sep 1942 || "Key West South"; 36 convoys; reverse KN
|-
| KW || Key West to Havana || Sep 1942 to Dec 1942 || Reverse CK
|-
| KX || UK to Gibraltar and later North African ports || Oct 1942 to Feb 1945 || In support of Operation Torch and subsequent operations; reverse XK
|}
L
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| LC || Sydney to St. John's || Mar 1942 to Jun 1943 || Reverse CL
|-
| LE || Port Said or Alexandria, Egypt, via Famagusta, Cyprus, to Haifa in Palestine or Beirut in Lebanon || Jun 1941 || "Levant East"; reverse LW
|-
| LGE || Lagos, Nigeria, to the east along the coast of West Africa || Mar 1944 || "Lagos Eastbound"; 4 convoys; reverse LGW
|-
| LGW || Lagos, Nigeria, to the west along the coast of West Africa to Takoradi, Gold Coast || Sep 1943 to Dec 1944 || "Lagos Westbound"; reverse LGE
|-
| LM || Lagos, Nigeria to Matadi, Congo || Jul 1943 to Aug 1943 ||
|-
| LMD || Lourenço Marques, Portuguese East Africa, to Durban, South Africa || 1943 to 1944 || "Lourenço Marques to Durban"; reverse DLM
|-
| LN || St. Lawrence to Labrador, Canada || Jun 1942 to Nov 1944 || Reverse NL
|-
| LQ || Barrier Reef ports to Brisbane || Jul 1943 to Feb 1944 ||
|-
| LS || West African route, typically Lagos, Nigeria to Freetown, Sierra Leone || Apr 1942 to Aug 1942 ||
|-
| LSD || Lagos, Nigeria via Freetown, Sierra Leone to Dakar, French West Africa || ??? || Reverse DSL
|-
| LT || Lagos, Nigeria, to Takoradi, Gold Coast || Sep 1942 to Aug 1943 || Reverse TL
|-
| LTS || Lagos, Nigeria via Takoradi, Gold Coast to Freetown, Sierra Leone || Sep 1943 to Sep 1944 || Reverse STL
|-
| LU || Humber estuary, UK to Elbe river, Germany || May 1945 to Jun 1945 || Reverse UL
|-
| LW || Haifa, Palestine to Port Said, Egypt || ??? || "Levant West"; reverse LE
|-
| LW || East coast of the US to the South-West Pacific Area || Jun 1942 to Nov 1942 || 3 convoys
|}
M
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| MA || Mombasa or Kilindini, Kenya to Aden || Oct 1941 to Dec 1941 || 3 convoys
|-
| MA || Madras to Port Blair, Andaman Islands or Chittagong, India || Jan 1942 to Mar 1945 || Reverse AM
|-
| MB || Southampton to Brest || Sep 1939 to Oct 1939 || Troops/equipment of the British Expeditionary Force for the reinforcement of France
|-
| MB || Colombo to Bombay || Apr 1942 to Jan 1945 || Reverse BM
|-
| MB || Port Moresby to Fall River and other Papuan destination || Mar 1943 to Nov 1943 ||
|-
| MC || Aden via Kilindini and Durban to Cape Town || Nov 1942 to Mar 1945 || Reverse CM
|-
| MD || Madagascar to Durban || ??? ||
|-
| ME || Malta to Alexandria and Port Said, Egypt || Jul 1940 to Jun 1943 || "Malta Eastward" or "Malta to Egypt"; reverse MW
|-
| MF || Port Moresby to Milne Bay and Fall River, Papua || Dec 1943 to Mar 1944 || Four convoys; Reverse FM
|-
| MF || Malta to Alexandria || Jun 1940 to Oct 1940 || Four convoys
|-
| MG || Malta to Gibraltar || Dec 1940 to Mar 1942 || Three military convoys; reverse GM
|-
| MG || Mississippi to Galveston || 1942 to 1943 || Reverse GM
|-
| MH || Milford Haven to Holyhead || ??? 1942 to Jul 1942 || Over 240 convoys; reverse HM
|-
| MH || Milford Haven to Clyde River || Jan 1945 to May 1945 ||
|-
| MK || Madagascar to Kilindini || Aug 1942 to Mar 1945 || 24 convoys; reverse KM
|-
| MKF || North Africa via Gibraltar to Liverpool or the Firth of Clyde || Nov 1942 to Jun 1945 || "Mediterranean to the UK Fast"; 57 fast military convoys; reverse KMF
|-
| MKS || North Africa via Gibraltar to Liverpool || Nov 1942 to Jun 1945 || "Mediterranean to the UK Slow"; 162 slow military convoys; reverse KMS; successor to HG after Operation Torch
|-
| MN || Kilindini, Kenya, or Mauritius to Seychelles for dispersal || Oct 1943 to Mar 1944 || 7 convoys
|-
| MO || Marseille to Oran and other ports in North Africa || Sep 1939 to Jun 1940 || Reverse OM
|-
| MR || Madras to Rangoon || Jan 1942 to Mar 1942 || Support for the defence of Burma against the Japanese B invasion; reverse RM
|-
| MS || Melbourne to Singapore || Jan 1942 to Mar 1942 || Support for the British-led forces facing the Japanese E invasion; 4 convoys
|-
| MS || Marseille to Naples || 1944 to 1945 || Reverse SM
|-
| MT || Methil on the Firth of Forth to Tyne estuary || Feb 1940 to Sep 1940 || "Methil to Tyne"; 175 coastal convoys
|-
| MT || Port Moresby, Papua to Townsville, Australia || Nov 1942 || "Port Moresby to Townsville"; single convoy
|-
| MTC || Bay of the Seine to Southend || Oct 1944 to Dec 1944 || 60 military convoys returning empty coasting cargo vessels to the UK; reverse TMC; successor to FTC
|-
| MTM || Bay of the Seine to Southend or other British ports || Oct 1944 to Nov 1944 || 19 military motor transport convoys; reverse TMM; successor to FTM
|-
| MV || Milne Bay, Papua to Townsville, Australia || Dec 1943 to Mar 1944 || 31 convoys
|-
| MW || Alexandria, Egypt to Malta || Nov 1940 to Jun 1943 || "Malta Westward"; 33 convoys
|-
| MWF || Port Said to Sicily, or via Malta to Bizerte or Algiers || Jul 1943 to Aug 1943 || Fast convoys; part of Operation Husky
|-
| MWS || Alexandria, Egypt, to various ports of Sicily || Jul 1943 to Aug 1943 || Slow convoys; part of Operation Husky
|}
N
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| NA || Canada to UK || Jan 1942 to Oct 1942 || 16 military troopship convoys
|-
| NA || Langemak Bay, New Guinea to ports in the Admiralty Islands group || Apr 1944 to Aug 1944 || 36 military convoys
|-
| NAP || Dover to France || Dec 1944 || Military convoys
|-
| NB || Langemak Bay, New Guinea to Cape Gloucester, New Britain || Jun 1944 to Jul 1944 || Four small convoys; reverse BN
|-
| NB || Singapore to dispersal || Jan 1942 || Single convoy; related to the response to the Japanese "E" invasion of Malaya
|-
| NC || Walvis Bay to Cape Town, South Africa || Feb 1943 to Jun 1943 || 18 convoys
|-
| NCF || Oran in French northwest Africa to Sicily || Jul 1943 || Fast convoys for the Allied invasion of Sicily, Operation Husky; reverse CNF
|-
| NCS || Oran in French northwest Africa to Sicily || Jul 1943 || Slow convoys for the Allied invasion of Sicily, Operation Husky
|-
| NE || New Zealand to the Panama Canal || 1942 to 1945 ||
|-
| NG || New York City to Guantanamo, Cuba || Aug 1942 to May 1945 || "New York to Guantánamo"; 207 convoys; reverse GN
|-
| NJ || Newfoundland from Botwood to St. John's || Jun 1942 to May 1944 || 36 convoys; reverse JN
|-
| NK || New York to Key West, Florida || Aug 1942 to May 1945 || "New York to Key West"; 164 convoys; reverse KN
|-
| NL || Labrador to St. Lawrence, Canada || Jul 1942 to Nov 1944 || Reverse LN
|-
| NLY || Lingayen Gulf, Philippine islands to Humboldt Bay, Netherlands New Guinea to Leyte, Philippine islands group || Apr 1945 to May 1945 || Five convoys
|-
| NP || Turkey to Port Said, Egypt || ???? ||
|-
| NP || River Clyde to Narvik, Norway || Apr 1940 to May 1940 || Two military ferry convoys in response to the German Operation Weserübung
|-
| NR || Norway to Methil on the Firth of Forth || May 1945 || Reverse RN
|-
| NS || River Clyde to Norway || May 1940 || Two convoys in response to the German Operation Weserübung
|-
| NS || New Caledonia to Sydney, Australia || ??? || Reverse SN
|-
| NSF || North Africa to Naples, Italy || Sep 1943 to Jul 1944 || 31 convoys; in support of Operation Avalanche and follow-on operations in southern Italy; reverse SNF
|-
| NSM || Scapa Flow, Orkney islands group to Narvik, Norway || Apr 1940 || Single convoy (NSM.1)
|-
| NT || Port Moresby, New Guinea to Townsville, Australia || Jan 1943 to Mar 1944 || 75 convoys; reverse TN
|-
| NV || Naples to Augusta and sometimes onward to Malta || Oct 1943 to Mar 1945 || 151 convoys; reverse VN
|-
| NY || New York City to destinations in the Caribbean and the UK || Aug 1943 to Nov 1944 || 57 convoys
|}
O
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| OA || Southend or Methil toward Liverpool for dispersal || Jul 1939 to Oct 1940 || 226 convoys; joined with "OB" convoys to make the passage to Gibraltar, then designated "G" and become an "OG" convoy
|-
| OB || Liverpool out into the Atlantic || Sep 1939 to Aug 1941 || 346 convoys; combined with "OA" convoys for passage to Gibraltar to become an "OG" convoy
|-
| OC || Melbourne to Newcastle || Jun 1942 to Dec 1943 || 149 convoys; reverse CO
|-
| OG || UK (later only Liverpool) to Gibraltar || Oct 1939 to Sep 1942 || "Outbound to Gibraltar"; mercantile convoys; combined from the "OA" and "OB" convoys; reverse HG
|-
| OL || Liverpool to the west for dispersal || Sep 1940 to Oct 1940 || Eight ocean outward fast convoys
|-
| OM || Oran to Marseille or Toulon, France || Oct 1944 to Jan 1945 || Reverse MO
|-
| ON || Methil to Bergen, Norway for dispersal || Nov 1939 to Apr 1940 || "Outbound Norway"
|-
| ON || Liverpool to Halifax, Nova Scotia || Jul 1941 to Jun 1945 || "Outbound to North America"; 307 convoys; successor to OB series; reverse HX (fast) and SC (slow)
|-
| ONM || Milford Haven, Wales, and Belfast Lough, Northern Ireland || Jul 1941 to 1943 ||
|-
| ONM || Atlantic route from Liverpool to New York City || ??? || Medium-speed ocean convoys
|-
| ONS || Liverpool to Halifax, Nova Scotia || Mar 1943 to Jun 1945 || Slow convoys; slow element of ON series; successor to OBS; reverse SC
|-
| OS || Liverpool to Freetown, Sierra Leone || Jul 1941 to May 1945 || "Outbound South"
|-
| OSS || Freetown, Sierra Leone, to Takoradi, Gold Coast || Jun 1942 || Extension of the "OS" route
|-
| OT || New York to the Caribbean (Aruba or Curaçao) and via Trinidad to northwest or west Africa || Feb 1943 to Jun 1944 || "Outbound from Trinidad"; 19 convoys; for sending fast tankers to North Africa to support Operation Torch
|-
| OT || Curaçao to Trinidad || May 1942 to Jul 1942 || "Outbound to Trinidad"; 14 convoys; reverse TO
|-
| OT || North Africa to the Dutch East Indies || Nov 1942 || Tankey convoys; after Operation Torch; reverse TO
|-
| OW || UK, India and Australia, with intermediate destinations || ??? ||
|-
| OW || Australia to Ceylon, India and the Middle East || Nov 1942 to Jul 1945 || "Outbound West"
|}
P
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| PA || Persian Gulf to Aden || Sep 1942 to Feb 1945 ||
|-
| PAD || Pointe Noire, Congo via Freetown, Sierra Leone to Dakar, French West Africa || ??? ||
|-
| PB || Persian Gulf to Bombay || Sep 1942 to Feb 1945 || Reverse BP
|-
| PG || Queensland to New South Wales, Australia || Jun 1942 to Feb 1944 || Reverse GP
|-
| PG || Pilottown, Mississippi, to Galveston, Texas || 1942 to 1943 || Reverse GP
|-
| PG || Panama Canal to Guantanamo, Cuba || Jul 1942 to Aug 1942 || Reverse GP; designed to as a response to Operation Paukenschlag
|-
| PGE || South from Pointe Noire, Congo || ??? ||
|-
| PH || Piraeus, Greece to ports on the heel of Italy || Nov 1944 to Feb 1945 || Reverse HP
|-
| PH || Leyte, Philippine islands group to Humboldt Bay, Dutch New Guinea || Jan 1945 ||
|-
| PK || Pilottown, Mississippi to Key West, Florida || Sep 1942 to Jan 1943 || Reverse KP
|-
| PN || Port Said, Egypt to Turkey || ??? || "Port Said Northward"; reverse NP
|-
| PQ || Iceland to ports in the northern part of the USSR || Sep 1941 to Sep 1942 || 19 convoys; reverse QP; replaced by JW series
|-
| PQ || Townsville, Queensland to Port Moresby, Papua || 1942 ||
|-
| PR || Piraeus, Greece to Dardanelles ("Rabbit Island") group in Turkey || Feb 1945 to Mar 1945 || Reverse RP
|-
| PT || Paramaribo, Netherlands Guiana to Trinidad || 1942 to 1944 || Tanker convoys; Reverse TP
|-
| PT || Auckland, New Zealand to Sydney, Australia || Oct 1942 ||
|-
| PT || Pearl Harbor to Tarawa in the Gilbert islands group || Nov 1943 to Jul 1945 || Military convoys
|-
| PTS || Pointe Noire, Congo via Takoradi, Gold Coast to Freetown, Sierra Leone || ??? || Reverse STP
|-
| PV || Melbourne to Townsville, Australia || Sep 1943 to Oct 1943 ||
|-
| PW || Portsmouth to Wales || Jul 1941 to Jun 1944 || Reverse WP
|}
Q
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| QL || Queensland coast, Brisbane to Townsville, Australia || Jul 1943 to Feb 1944 || Reverse LQ
|-
| QP || Northern USSR to Iceland and later the UK || Sep 1941 to Nov 1942 || 18 Arctic convoys; merchant ships loaded with timber; reverse PQ; replaced by RA series
|-
| QS || Quebec to Sydney || May 1942 to Dec 1944 || Reverse SQ
|}
R
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| RA || Northern USSR to Loch Ewe and the River Clyde estuary of Scotland || Dec 1942 to May 1945 || Reverse JW; successor to QP series
|-
| RB || Newfoundland, Canada to Liverpool, UK || Sep 1942 || Single convoy (RB.1) of small passenger ships
|-
| RED || River Clyde via Gibraltar to the Far East || Sep 1939 to Oct 1939 || Two convoys (RED.1 and RED.2)
|-
| RJ || Recife to Rio de Janeiro, Brazil || 1942 to 1944 || Reverse JR
|-
| RK || Rangoon, Burma to Arakan, Burma and Calcutta, India || May 1945 to Aug 1945 || 48 convoys; reverse KR
|-
| RK || Colombo, Ceylon to Kilindini, Kenya || Apr 1944 to Jan 1945 || Four convoys; reverse KR
|-
| RM || Rangoon, Burma via Madras, India to Colombo, Ceylon || Jun 1945 || Three convoys; reverse MR
|-
| RN || Methil to Norway || May 1945 || Military convoys; reverse NR
|-
| RP || Dardanelles ("Rabbit Island") to Piraeus, Greece || 1945 || Reverse PR
|-
| RS || Gibraltar to Freetown, Sierra Leone || Feb 1943 to Mar 1945 || 31 convoys; reverse SR
|-
| RT || Cape Town, South Africa to Freetown, Sierra Leone || Aug 1941 || Single convoy (RT.1)
|-
| RT || Recife, Brazil to Trinidad || 1943 || Reverse TR
|-
| RU || Reykjavík, Iceland to Loch Ewe or Belfast Lough, UK || Dec 1941 to May 1945 || 169 convoys; reverse UR
|}
S
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| SB || Sydney to Corner Brook, Newfoundland || May 1942 to Dec 1944 || Reverse BS
|-
| SB || Allied assault convoys for Operation Husky || Jul 1943 || Divided into SBF (fast), SBM (medium-speed) and SBS (slow) elements
|-
| SC || Sydney, Nova Scotia to Liverpool || Aug 1940 to Jun 1945 || North Atlantic route; slow convoys; reverse ON
|-
| SD || Iceland to River Clyde estuary || Apr 1941 to May 1945 || Military convoys; reverse DS
|-
| SD || Seychelles to Diego-Suarez, Madagascar || 1944 ||
|-
| SG || Southend on the Thames estuary to Humber estuary || Mar 1940 to Apr 1940 || "Southend to Grimsby"; reverse GS
|-
| SG || Sydney to Greenland || Jul 1942 to Mar 1945 || 61 convoys; reverse GS
|-
| SH || Sydney to Halifax, Nova Scotia || May 1942 to May 1945 || 259 convoys; reverse HS
|-
| SHX || Sydney to join HX convoys || Jul 1940 to Aug 1941 ||
|-
| Silvertip || Newhaven to Dieppe || Sep 1944 || Military ferry convoys after the break-out following Operation Overlord
|-
| SJ || San Juan to Guantanamo || 1942 ||
|-
| SJ || Batavia, Dutch East Indies and Singapore to Colombo, Ceylon || Feb 1942 || Reverse JS
|-
| SJ || Santos to Rio de Janeiro, Brazil || 1942 to 1943 ||
|-
| SL || Freetown, Sierra Leone to Liverpool, UK || Sep 1939 to Dec 1944 || 178 SLF (fast) and SLS (slow) convoys; from May 1943 travelled home with MKS convoys
|-
| SM || Singapore or Batavia, Netherlands East Indies to Fremantle, Australia || Dec 1941 to Feb 1942 ||
|-
| SM || Naples, Italy to Marseille, France || Aug 1944 to May 1945 || Reverse MS; part of Operation Dragoon and following operations
|-
| SN || Sydney, Australia to New Caledonia || 1942 to 1945 || Reverse NS
|-
| SNF || Salerno and Naples, Italy, to North Africa || Sep 1943 to Nov 1944 || "South from Naples Fast"; 31 fast troopship convoys; reverse NSF; following Operation Avalanche and follow-on Italian operations
|-
| SPAB || Chanel-Port aux Basques, Newfoundland, to Sydney, Nova Scotia || Aug 1943 to Sep 1944 ||
|-
| SQ || Sydney to Quebec || May 1942 to Nov 1944 || Reverse QS
|-
| SR || Calcutta, India ("Sandheads") to Rangoon, Burma || Dec 1941 to Mar 1942 || To reinforce forces holding that country
|-
| SR || Freetown, Sierra Leone to Gibraltar || Feb 1943 to Apr 1945 || Reverse RS
|-
| SRF || South of France to Naples || Sep 1944 || Single convoy (SRF.11); returned empty vessels after Operation Dragoon
|-
| SRM || South of France to Naples || Aug 1944 to Oct 1944 || 17 convoys; returned empty vessels after Operation Dragoon
|-
| ST || Freetown, Sierra Leone to Takoradi, Gold Coast || Aug 1941 to Apr 1945 || Reverse TS
|-
| ST || Sydney to Townsville, Australia || Jan 1943 to May 1943 || Reverse TS
|-
| STC || Freetown, Sierra Leone to Takoradi, Gold Coast and onward to Cape Town, South Africa || ??? || Part of ST
|-
| STL || Freetown, Sierra Leone to Takoradi, Gold Coast and onward to Lagos, Nigeria || Sep 1943 to Sep 1944 || 33 convoys; part of ST; reverse LS
|-
| STP || Freetown, Sierra Leone to Takoradi, Gold Coast and onward to Pointe Noire, Congo || ??? || Part of ST; reverse PTS
|-
| STW || Freetown, Sierra Leone to Takoradi, Gold Coast and onward to Walvis Bay || 1943 to 1944 || Part of ST; reverse WTS
|-
| SU || Suez Canal, Aden and Colombo, Ceylon to Australia || Mar 1942 to Jan 1943 || Reverse US; troopships returning troops home for the defense of Australia against Japan
|-
| SV || Sydney, New South Wales to Townsville, Queensland || ??? || Reverse VS
|-
| SW || Suez Canal via Kilindini, Kenya to Durban or Cape Town, South Africa || Sep 1940 to Oct 1941 || Military convoys
|}
T
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| T || Hollandia, Netherlands New Guinea to Manila, Philippine islands group || 1944 to 1945 ||
|-
| TA || UK to United States || Jan 1942 to Jul 1945 || Military troopship convoys using mostly large liners; reverse AT
|-
| TA || Tobruk to Alexandria, North Africa || Dec 1941 to Jun 1942 || Reverse AT
|-
| TAC || Thames to Ostend, Belgium || Oct 1944 to May 1945 || 242 military convoys
|-
| TACA || Thames to Antwerp, Belgium || Nov 1944 to Dec 1944 || 5 military convoys; replaced by TAM series; reverse ATM
|-
| TAG || Trinidad via Aruba or Curaçao to Guantanamo, Cuba || Aug 1942 to May 1945 || 205 convoys; replaced the TAW series; reverse GAT
|-
| TAM || Thames to Antwerp, Belgium || Dec 1944 to Jun 1945 || 172 military convoys; replaced by TACA series; reverse ATM
|-
| Tanker || Gibraltar to Malta || ??? || British slow convoy operation in the Mediterranean
|-
| TAP || Thames to France || 1945 || Military convoys
|-
| TAW || Trinidad via Aruba or Curaçao to Key West or Guantánamo, Cuba || Jul 1942 to Aug 1942 || 19 convoys; reverse WAT; replaced by TAG series
|-
| TB || Trinidad to Bahia, Brazil || Jan 1943 to Jul 1943 || Reverse BT
|-
| TB || USA to Sydney, Australia || 1942 to 1945 || Military convoys to build-up forces in South-West Pacific Area command
|-
| TBC || Thames estuary to Bristol Channel || Dec 1944 to May 1945 || 162 coastal route convoys; reverse BTC
|-
| TC || Canada to UK || Dec 1939 to Dec 1941 || Military troopship convoys delivering Canadian troops; reverse CT
|-
| TC || Tunisia to Corsica || Jun 1944 to Nov 1944 || Reverse CT
|-
| TCU || Caribbean (and New York City) to Liverpool, UK || May 1944 to Aug 1944 || Military convoys of tankers, fast merchant ships troopships; counterpart to UC; reverse UCT
|-
| TD || Thursday Island to Darwin, Australia || Feb 1943 to Oct 1944 || Reverse DT
|-
| TD || New Zealand to Northern Australia || 1942 to 1944 ||
|-
| TE || East from Trinidad for dispersal || 1942 to 1943 || "Trinidad Eastbound"
|-
| TE || Gibraltar or western North African ports to eastern North African ports || Nov 1942 to Jul 1943 || "Torch Eastbound"; after Operation Torch to keep Allied forces supplied
|-
| TF || Trinidad to Freetown, Sierra Leone || Nov 1942 to Jan 1944 ||
|-
| TF || Eastern Atlantic and western Mediterranean || Nov 1942 to Aug 1944 || 7 miscellaneous convoys
|-
| TG || Trinidad to Guantanamo, Cuba || 1942 to 1943 ||
|-
| TG || Tyne river to Grimsby || Mar 1940 to Apr 1940 || 2 British convoys
|-
| TG || Naples to Anzio || Jan 1944 || Single troopship convoy for Operation Shingle
|-
| TGE || East from Takoradi, Gold Coast and Lagos, Nigeria for dispersal || Sep 1943 to Nov 1944 || 18 convoys
|-
| TH || Trinidad to Halifax, Nova Scotia || Jun 1942 to Jul 1942 || 4 convoys; reverse HT
|-
| TJ || Trinidad to Natal, Recife or Rio de Janeiro, Brazil || Jul 1943 to Feb 1945 || Reverse JT; successor to TB series
|-
| TJF || Assault convoys for the Invasion Sicily || Jul 1943 || High-speed convoys for Operation Husky
|-
| TJM || Assault convoys for the Invasion Sicily || Jul 1943 || Medium-speed convoys for Operation Husky
|-
| TJS || Assault convoys for the Invasion Sicily || Jul 1943 || Slow-speed convoys for Operation Husky
|-
| TL || Takoradi, Gold Coast, to Lagos, Nigeria || May 1943 to Aug 1943 || 14 convoys
|-
| TLDM || Takoradi, Gold Coast via Lagos, Nigeria and Douala, Cameroun to Matadi, Congo || Nov 1942 to Apr 1943 || 4 convoys
|-
| TM || Tyne river and Methil, Firth of Forth || Feb 1940 to Apr 1940 || Reverse MT
|-
| TM || UK to Norway || Apr 1940 || British military ferry convoy to reinforce Operation Sickle
|-
| TM || Curaçao to Gibraltar || Jan 1943 || Single special tanker convoy for the Allied 1st Army after Operation Torch
|-
| TM || Taranto to the south coast of France || Aug 1944 || Single military convoy supporting Operation Dragoon
|-
| TMC || Thames via St. Helen's Roads, Isle of Wight to France || Oct 1944 to Dec 1944 || Initiated as the ETC series
|-
| TMF || Trinidad to Gibraltar || Dec 1942 to Jan 1943 || 2 fast convoys after Operation Torch
|-
| TMM || Thames to France || Oct 1944 to Nov 1944 || Military vehicle convoys; initiated as the ETM series
|-
| TN || Townsville, Australia to Port Moresby and Fall River, New Guinea || Dec 1942 to Mar 1944 || Reverse NT
|-
| TO || North Africa or Dakar to Aruba or Curaçao in the Caribbean Sea || Feb 1943 to May 1943 || Tanker and troopship convoys; reverse OT
|-
| TO || Trinidad to Curaçao || May 1942 to Jul 1942 ||
|-
| TO || Northwest Africa via the Caribbean Sea (Aruba or Curaçao) to New York City || Nov 1942 || Fast tanker convoys returning from Operation Torch; reverse OT
|-
| TP || Rosyth to a Norwegian port || Apr 1940 || Single British military troop convoy (TP.1) in response to Operation Weserübung
|-
| TP || Trinidad to Paramaribo, Netherlands Guiana || Jan 1943 || Reverse PT
|-
| TP || Tarawa, Gilbert islands group to Pearl Harbor || Nov 1943 to Jan 1944 || US military convoys; reverse PT
|-
| TR || Trinidad to Recife, Brazil || Jan 1943 || Reverse RT
|-
| TRIN || Southeast from Trinidad for dispersal || Aug 1942 to Nov 1942 ||
|-
| TS || Takoradi, Gold Coast to Freetown, Sierra Leone || Aug 1942 to Apr 1945 || Reverse ST; successor to the LS series
|-
| TS || Townsville to Sydney || 1943 || Reverse ST
|-
| TSD || Takoradi, Gold Coast via Freetown, Sierra Leone to Dakar, French West Africa || 1943 to 1945 || Reverse DST
|-
| TSF || Allied assault convoys for the Salerno invasion || Sep 1943 || 2 high-speed convoys for Operation Avalanche
|-
| TSM || Allied assault convoys for the Salerno invasion || Sep 1943 || Medium-speed convoys for Operation Avalanche
|-
| TSS || Allied assault convoys for the Salerno invasion || Sep 1943 || 2 slow-speed convoys for Operation Avalanche
|-
| TU || UK to the USA || Aug 1943 to May 1944 || 12 military troopship convoys; reverse UT
|-
| TUC || Liverpool, UK to the Caribbean (later New York) || Feb 1943 to Jun 1945 || 14-kt UC-series convoys of tankers, fast merchant ships troopships
|-
| TV || Tripoli, Libya to Valletta, Malta || Nov 1943 || Single convoy (TV.7); reverse VT
|-
| TV || East from Trinidad for dispersal || ??? ||
|-
| TV || Tripoli, Libya to Alexandria, Egypt || Sep 1943 to Aug 1944 || 41 convoys; reverse XT
|}
U
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| UA || UK to Azores || Sep 1943 to Oct 1943 || Three convoys; associated with Operation Alacrity
|-
| UC || Liverpool, UK to Curaçao (or New York) || Feb 1943 to Jun 1945 || 71 fast convoys of tankers and merchant ships; reverse CU
|-
| UCT || UK to New York || ??? || Troop convoys
|-
| UG || USA to North Africa || Oct 1942 to Apr 1945 || Military convoys for delivering troops for Operation Torch and follow-on operations; reverse GU
|-
| UGF || Chesapeake Bay to Gibraltar and the Mediterranean || Oct 1942 to Apr 1945 || 26 fast convoys; UGF.1 was the invasion force for Operation Torch
|-
| UGL || East Coast of the US to Gibraltar and the Mediterranean || Apr 1943 to May 1943 || 2 landing craft convoys (UGL.2, UGL.4)
|-
| UGS || Chesapeake Bay to Gibraltar and the Mediterranean || Nov 1942 to May 1945 || 100 slow convoys; reverse GUS
|-
| UL || Elbe River to the Humber River || May 1945 || Military convoys; reverse LU
|-
| ULU || Singapore to Bombay || Feb 1942 || Single evacuation convoy (ULU.1) just before the Japanese capture of Singapore
|-
| UR || Loch Ewe (later Oban and Belfast Lough) to Reykjavík || Dec 1941 to May 1945 || Reverse RU
|-
| US || Australia or New Zealand and later Colombo, Ceylon to the Suez Canal || Jan 1940 to Aug 1943 || Military convoys bringing troops to the Middle East; reverse SU
|-
| UT || United States to UK || Aug 1943 to Apr 1944 || US military troopship convoys preparing for Operation Overlord; reverse TU
|}
V
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| VB || Townsville to Brisbane, Australia || May 1943 to Jul 1943 || Reverse BV
|-
| VC || Valletta, Malta to Tobruk, Cyrenaica || 1943 to 1944 || Reverse CV
|-
| VK || Sydney, Australia to Wellington or Auckland, New Zealand or Nouméa, New Caledonia || Dec 1940 to May 1943 ||
|-
| VN || Malta to Naples, and then Augusta, Sicily, to Naples, Italy, and finally from Naples to Livorno, Italy || Oct 1943 to May 1945 || "Valletta to Naples"; 165 coastal convoys; reverse NV
|-
| VS || Townsville to Sydney, Australia || ??? || Reverse SV
|-
| VT || Valletta, Malta to Tripoli, Libya || Oct 1943 || Single convoy (VT.7); reverse TV
|}
W
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| WA || Curaçao to Aruba || Oct 1942 to Jul 1944 ||
|-
| WAP || UK to France || Jul 1944 to Oct 1944 || Military convoys for Operation Overlord and follow-on operations
|-
| WAT || Key West via Aruba to Trinidad || Jul 1942 to Sep 1942 || 17 convoys; reverse TAW
|-
| WDC || UK to France || Sep 1944 || 13 military coaster convoys; after Operation Overlord
|-
| WEC || Isle of Wight to France || Dec 1944 to Apr 1945 || 22 military convoys
|-
| WEL || Isle of Wight to France || Jun 1944 || Landing craft convoys for Operation Overlord
|-
| WEP || Isle of Wight to Cherbourg || Dec 1944 || Five military convoys
|-
| WFM || UK to France || Oct 1944 to Nov 1944 || Military convoys, following Operation Overlord
|-
| WHX || St John's, Newfoundland to join HX convoys || ??? || Feeder convoys for the HX series
|-
| WMP || Isle of Wight to Arromanches, France || Nov 1944 to Dec 1944 || Five military convoys, following Operation Overlord
|-
| WN || Clyde estuary (later Oban and Loch Ewe) to Methil on the Firth of Forth || Jul 1940 to May 1945 || 722 British coastal convoys
|-
| WNC || Isle of Wight to Le Havre || Dec 1944 to May 1945 || Military convoys
|-
| WNL || Isle of Wight to France || Apr 1945 to May 1945 || Military convoys
|-
| WO || India or Ceylon to Australia || Jan 1945 to Jul 1945 || 12 troopship convoys
|-
| WP || Milford Haven to Portsmouth || Jul 1941 to May 1944 || "Wales to Portsmouth"; 547 British coastal convoys
|-
| WS || Wabana, Newfoundland and Labrador to Sydney, Nova Scotia || ??? ||
|-
| WS || UK via the Suez Canal to Bombay, India, or from South Africa to India || Aug 1940 to Nov 1943 || Troopship convoys
|-
| WS || UK to Gibraltar, Freetown, Sierra Leone, the Cape of Good Hope and the Middle East or India, or for dispersal || Jul 1940 to Aug 1943 ||
|-
| WSC || Wabana, Newfoundland, to join SC convoys || ??? ||
|-
| WTS || Walvis Bay via Takoradi, Gold Coast to Freetown, Sierra Leone || ??? ||
|-
| WVC || St Helen's Roads, Isle of Wight, or the Solent to Le Havre in northern France || Dec 1944 to May 1945 || 161 supply convoys for operations in Belgium and the Netherlands into Germany
|-
| WVL || St Helen's Roads, Isle of Wight to Le Havre in northern France || Mar 1945 to May 1945 || Seven landing craft and supply convoys for Allied armies fighting in northern Germany
|-
| WVP || St Helen's Roads, Isle of Wight, or the Solent to Le Havre in northern France || Dec 1944 to May 1945 || 151 military personnel convoys for operations in Belgium and the Netherlands into Germany
|-
| WX || Western Desert ports to Alexandria, Egypt || ??? ||
|}
X
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| XB || Halifax, Nova Scotia to Boston or the Cape Cod Canal, Massachusetts || Mar 1942 to May 1945 || 196 convoys; reverse BX
|-
| XC || Chagos and Maldive island groups to Colombo, Ceylon || Apr 1943 to Dec 1944 ||
|-
| XIF || Alexandria or Port Said, Egypt, to Taranto or Naples, Italy || Sep 1943 || Troop and military supply convoys in support of Operation Avalanche; reverse IXF
|-
| XK || Gibraltar to UK || Oct 1942 to May 1945 || Special Operation Torch and subsequent return convoys; reverse KX
|-
| XT || Detached from MW convoys to Tripoli, Libya, or plying the route from Alexandria, Egypt, to Tripoli || Feb 1943 to Jul 1944 || For operations in North Africa or for Operation Husky; reverse TX
|-
| XTG || Alexandria, Egypt via Tripoli, Libya, to Gibraltar || Jun 1943 || Two convoys (XTG.1 and XTG.2); reverse GTX
|-
| XW || Alexandria, Egypt to Western Desert || 1941 to 1943 || Supply convoys; reverse WX
|}
Y
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| Y || Madagascar || Apr 1942 to May 1942 || British slow convoy operation for Operation Ironclad, in tandem with the Z fast convoy
|}
Z
{| class="wikitable"
|-
! Convoy !! Origin and destination !! Dates !! Remarks
|-
| Z || Madagascar || Apr 1942 to May 1942 || British fast convoy in tandem with Y for Operation Ironclad
|-
| ZC || Cristóbal to Curaçao || Oct 1942 to Dec 1942 || Five tankey convoys; reverse CZ
|-
| ZG || Cristóbal to Guantánamo, Cuba || Aug 1942 to May 1945 || 141 convoys; reverse GZ
|-
| ZK || Brisbane, Australia to Port Moresby, New Guinea || Mar 1941 to Jul 1942 ||
|-
| ZT || New Zealand to Sydney, Australia || ??? || Reverse VK
|}
References
- Arnold Hague: The Allied Convoy System 1939–1945 (2000) (Canada). (UK)
- CODENAMES: Operations of World War 2. * codenames.info
External links
- listing on Convoyweb
- listing on U-Boat.net