M4 or M-4 most often refers to:

  • M4 carbine, an American carbine
  • M4 Sherman, an American World War II medium tank

M4, M04, or M-4 may also refer to:

Arts and entertainment

  • M4 (EP), a 2006 EP by Faunts
  • M4 (video game), a 1992 computer game developed for the Macintosh
  • M.IV ("Matrix IV"), the fictional Warner Brothers videogame project inside the 2021 film The Matrix Resurrections
  • M4, the robot assistant to the character Flint in the Star Trek episode Requiem for Methuselah

Military

Weapons

  • Benelli M4 Super 90, an Italian semi-automatic, gas-operated shotgun
  • M4 autocannon, an American 37 mm automatic gun
  • M4 Selectable Lightweight Attack Munition (SLAM), an American land mine
  • M4 SLBM, a French submarine-launched ballistic missile from 1985
  • M4 Survival Rifle, an American rifle in aircraft survival gear
  • Spectre M4, an Italian submachine gun
  • M4 bayonet, an American World War II bayonet used for the M1 Carbine
  • Gross-Basenach M IV, a pre-WWI German military semi-rigid airship

Aircraft, ships, and vehicles

  • , a 1980 Swedish Navy minelayer, later redesignated as ocean patrol vessel P04
  • , a Swedish Navy mine sweeper
  • (M4), a First World War British Royal Navy monitor
  • , a British M-class submarine
  • M4 tractor, a U.S. Army artillery tractor from 1943
  • Myasishchev M-4, a 1950s Soviet strategic bomber aircraft
  • Meusel M-IV, a German glider; see List of German gliders

Other uses in military

  • M4 flame fuel thickening compound, a substance used in fire bombs and incendiary weapons
  • M4 (German Navy 4-rotor Enigma), a variant of the Enigma cryptography machine
  • M04, desert variant of M05, a camouflage pattern used by the Finnish Defence Forces

Science and technology

Biology, medicine and organic chemistry

  • ATC code M04, Antigout preparations, a subgroup of the Anatomical Therapeutic Chemical Classification System
  • British NVC community M4, a type of mire plant community in the British National Vegetation Classification system
  • M4, the FAB classification of acute myelomonocytic leukemia
  • Muscarinic acetylcholine receptor M<sub>4</sub>, a protein

Computing and electronics

  • Apple M4, a central processing unit in the Apple M series
  • m4 (computer language), a macro processing language
  • M4, part number for a 1N400x general purpose diode
  • Sony Xperia M4 Aqua, a mobile phone
  • , a processor family
  • M4 Data, a defunct British tape library manufacturer

Other uses in science and technology

  • Messier 4 (M4), a globular cluster in the Scorpius constellation of stars
  • Leica M4, a 1967 35&nbsp;mm camera
  • M4, an ISO metric screw thread
  • Foton-M No.4, a Russian microgravity and bioscience research spacecraft launched in July 2014

Transportation

Air

  • Covington Municipal Airport (Tennessee), FAA location identifier M04
  • Maule M-4, a 1960 American four-seat cabin monoplane aircraft
  • Miles M.4 Merlin, a 1930s British five-seat cabin monoplane aircraft

Rail

  • Bucharest Metro Line M4, Romania
  • Line 4 (Budapest Metro), Metro 4 or M4, Hungary
  • M4 (Copenhagen), a future expansion of the Copenhagen Metro, Denmark
  • M4 (Istanbul Metro), a subway line on the Asian side of Istanbul, Turkey
  • M4, variant of the M2, an American electric multiple unit on the Metro-North Railroad
  • M4, an American rapid transit car on the Market–Frankford Line
  • Milan Metro Line 4, rapid transit line in Milan, Italy
  • Sri Lanka Railways M4, a class of diesel-electric locomotive
  • M4 (Warsaw), proposed subway line in Warsaw, Poland

Road

  • List of M4 roads with the same name in many countries
  • BMW M4, a car
  • M4 Vacamatic, a 1941 semi-automatic transmission made by Chrysler
  • M4, a bus route of Fifth and Madison Avenues Line, New York City, U.S.
  • Mid-engine, four-wheel-drive layout, or M4 layout, an automotive design

Other uses

  • Héctor David Delgado Santiago (1975–2013, alias El Metro 4, sometimes M4), Mexican drug lord
  • M4, a measure of money supply
  • M4-, M4+ and M4x, disciplines in men's rowing
  • MLBB M4 World Championship, the fourth Mobile Legends: Bang Bang World Championship held in 2023 at the conclusion of the 2022 season
  • M4, a difficulty grade in mixed climbing

See also

  • MIV (disambiguation)
  • 4M (disambiguation)