The First Holt Ministry (Liberal–Country Coalition) was the 41st ministry of the Government of Australia. It was led by the country's 17th Prime Minister, Harold Holt. The First Holt ministry succeeded the Tenth Menzies ministry, which dissolved on 26 January 1966 following the retirement of former Prime Minister Sir Robert Menzies. The ministry was replaced by the Second Holt ministry on 14 December 1966 following the 1966 federal election.
As of 20 December 2020, Ian Sinclair is the last surviving member of the First Holt ministry; Sinclair is also the last surviving minister of the Menzies government, the Second Holt ministry, and the McEwen, Gorton, and McMahon governments, as well as the First Fraser ministry. James Forbes was the last surviving Liberal minister, and Allen Fairhall and Charles Barnes were the last surviving Liberal and Country Cabinet ministers respectively.
Cabinet
{| class="wikitable sortable"
!colspan="2"|Party
!Minister
!Portrait
!Portfolio
|-
| | ||Liberal
| Harold Holt <br />
for Higgins <br />
| 100px
|
- Prime Minister
- Leader of the Liberal Party
|-
| | ||Country
| John McEwen <br />
for Murray <br />
| 100px
|
- Leader of the Country Party
- Minister for Trade and Industry
|-
| | ||Liberal
| William McMahon <br />
for Lowe <br />
| 100px
|
- Deputy Leader of the Liberal Party
- Treasurer
|-
| | ||Liberal
| Paul Hasluck <br />
for Curtin <br />
| 100px
|
- Minister for External Affairs
|-
| | ||Country
| Charles Adermann <br />
for Fisher <br />
| 100px
|
- Deputy Leader of the Country Party <small>(to 10 December 1966)</small>
- Minister for Primary Industry
|-
| | ||Liberal
| Allen Fairhall <br />
for Paterson <br />
| 100px
|
- Minister for Defence
|-
| | ||Liberal
| Denham Henty <br />
Senator for Tasmania <br />
| 100px
|
- Leader of the Government in the Senate
- Minister for Supply
|-
| | ||Liberal
| Alan Hulme <br />
for Petrie <br />
| 100px
|
- Postmaster-General
- Vice-President of the Executive Council
|-
| | ||Liberal
| David Fairbairn <br />
for Farrer <br />
| 100px
|
- Minister for National Development
- Leader of the House <small>(to October 1966)</small>
|-
| | ||Country
| Charles Barnes <br />
for McPherson <br />
| 100px
|
- Minister for Territories
|-
| | ||Liberal
| John Gorton <br />
Senator for Victoria <br />
| 100px
|
- Minister for Works
- Minister in charge of Commonwealth Activities in Education and Research under the Prime Minister
|-
| | ||Liberal
| Les Bury <br />
for Wentworth <br />
| 100px
|
- Minister for Labour and National Service
|}
Outer ministry
{| class="wikitable sortable"
!colspan="2"|Party
!Minister
!Portrait
!Portfolio
|-
| | ||Liberal
| Gordon Freeth <br />
for Forrest <br />
| 100px
|
- Minister for Shipping and Transport
|-
| | ||Liberal
| Reginald Swartz <br />
for Darling Downs <br />
| 100px
|
- Minister for Civil Aviation
|-
| | ||Liberal
| Hubert Opperman <br />
for Corio <br />
| 100px
|
- Minister for Immigration
|-
| | ||Liberal
| Billy Snedden <br />
for Bruce <br />
| 100px
|
- Attorney-General
|-
| | ||Liberal
| Dr James Forbes <br />
for Barker <br />
| 100px
|
- Minister for Health
|-
| | ||Country
| Doug Anthony <br />
for Richmond <br />
| 100px
|
- Minister for the Interior
|-
| | ||Liberal
| Fred Chaney <br />
for Perth <br />
| 100px
|
- Minister for the Navy
|-
| | ||Liberal
| Peter Howson <br />
for Fawkner <br />
| 100px
|
- Minister for Air
- Minister assisting the Treasurer
|-
| | ||Liberal
| Ken Anderson <br />
Senator for New South Wales <br />
| 100px
|
- Minister for Customs and Excise
|-
| | ||Country
| Colin McKellar <br />
Senator for New South Wales <br />
| 100px
|
- Minister for Repatriation
|-
| | ||Country
| Ian Sinclair <br />
for New England <br />
| 100px
|
- Minister for Social Services
|-
| | ||Liberal
| Dame Annabelle Rankin<br />
Senator for Queensland <br />
| 100px
|
- Chief Government Whip in the Senate <small>(to 8 March 1966)</small>
- Minister for Housing
|-
| | ||Liberal
| Malcolm Fraser <br />
for Wannon <br />
| 100px
|
- Minister for the Army
|}