The Minister of Finance (de facto Deputy Prime Minister) was a member of the Executive Committee of the Privy Council of Northern Ireland (Cabinet) in the Parliament of Northern Ireland which governed Northern Ireland from 1921 to 1972. The post was combined with that of the Prime Minister of Northern Ireland for a brief period in 1940 – 41 and was vacant for two weeks during 1953, following the death of incumbent Minister John Maynard Sinclair. The Office was often seen as being occupied by the Prime Minister's choice of successor. Two Ministers of Finance went on to be Prime Minister, while two more, Maginness and Jack Andrews were widely seen as possible successors to the Premiership.
| Name | Took office | Prime Minister | Party | ||
|---|---|---|---|---|---|
| 1. | Hugh MacDowell Pollock | 7 June 1921 | Craigavon | ||
| 2. | J. M. Andrews | 21 April 1937 | Craigavon, Andrews | ||
| 3. | John Milne Barbour | 16 January 1941 | Andrews | ||
| 4. | John Maynard Sinclair | 6 May 1943 | Brookeborough | ||
| Vacant | 31 January 1953 | Brookeborough | N/A | ||
| 5. | Brian Maginess | 13 February 1953 | Brookeborough | ||
| 6. | George Boyle Hanna | 20 April 1956 | Brookeborough | ||
| 7. | Terence O'Neill | 21 September 1956 | Brookeborough | ||
| 8. | Jack Andrews | 25 March 1963 | O'Neill | ||
| 9. | Ivan Neill | 22 July 1964 | O'Neill | ||
| 10. | Herbert Kirk | 2 April 1965 | O'Neill, Chichester-Clark, Faulkner | ||
From 3 May 1969, a separate and distinct office of Deputy Prime Minister was created and occupied by Jack Andrews, who was also Leader of the Senate.
Office abolished 1943
Office abolished 1969
Office abolished 1969