The Ulster Unionist Party (UUP) was founded in Northern Ireland in 1905. Early leadership records are incomplete.
| Name | Term start | Term end | Notes |
|---|---|---|---|
| James Hamilton, 2nd Duke of Abercorn | 1905 | 19?? | |
| James Craig, 1st Viscount Craigavon | 19?? | 19?? | |
| J. M. Andrews | 19?? | 19?? | |
| Herbert Dixon, 1st Baron Glentoran | 1947 | 19?? | |
| Basil Brooke, 1st Viscount Brookeborough | 195? | 19?? | |
| Clarence Graham | 1963 | 196? | |
| Jack Andrews | 1969 | 1973? | |
| James G. Cunningham | 1973? | 1980 | |
| George Anthony Clark | 1980 | 1990 | |
| Josias Cunningham | 1990 | 2000 | |
| Martin Smyth | 2000 | 2004 | |
| Dennis Rogan | 2004 | 2006 | |
| Robert John White | 2006 | 2008 | Office merged with that of Chairman - incumbent Chairman David Campbell continuing |
| May Steele | 2016 | 2020 | Honorary President - term ceased on her death |
| Daphne Trimble | 13 March 2023 | Incumbent | Honorary President [1] |
A list of General Secretaries of the Ulster Unionist Council. [2] From 1998 until 2007, the post was "Chief Executive of the Ulster Unionist Party". [3]