MPs elected since 1918
Member | Constituency | Years served |
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W. E. D. Allen | Belfast West | 1929–1931 1 |
William James Allen | Armagh North Armagh | 1917–1922 1922–1948 |
Hugh Alfred Anderson | Londonderry North | 1918–1919 |
Edward Mervyn Archdale | Fermanagh North | 1916-1922 |
C. W. Armstrong | Armagh | 1954–1959 |
Henry Bruce Armstrong | Mid Armagh | 1921–1922 |
Hugh T. Barrie | North Londonderry | 1919–1922 |
Charles Beattie | Mid Ulster | 1955–1956 |
Roy Beggs | East Antrim | 1983–2005 |
Robert Bradford | Belfast South | 1977–1981 2 |
Thomas Watters Brown | North Down | 1918-1922 |
Alexander Browne | Belfast West | 1931–1943 |
David Burnside | South Antrim | 2001–2005 |
David Campbell | Belfast South | 1952–1963 |
Edward Carson | Dublin University Belfast Duncairn | 1892-1918 1918-1921 |
John Carson | Belfast North | February 1974 – 1979 |
Robin Vane-Tempest-Stewart, Viscount Castlereagh | Down | 1931–1945 |
Robert Chichester | South Londonderry | 1921–1922 |
Robin Chichester-Clark | Londonderry | 1955 – February 1974 |
Henry Maitland Clark | North Antrim | 1959–1970 |
Thomas Loftus Cole | Belfast East | 1945–1950 |
William Coote | Tyrone South | 1916-1922 |
James Craig | East Down Down Mid | 1906–1918 1918-1921 |
William Craig | Belfast East | 1977–1979 2 |
Knox Cunningham | South Antrim | 1955–1970 |
George Currie | North Down | 1955–1970 |
Charles Curtis Craig | Antrim South | 1903 – 1922 |
Herbert Dixon | Belfast Pottinger Belfast East | 1918-1922 1922–1940 |
Maurice Dockrell | Dublin Rathmines | 1918-1922 |
Jeffrey Donaldson | Lagan Valley | 1997–2003 3 |
Tom Elliott | Fermanagh and South Tyrone | 2015–2017 |
Charles Falls | Fermanagh and Tyrone | 1924–1929 |
Patricia Ford | North Down | 1953–1955 |
George Forrest | Mid Ulster | 1956–1969 4 |
Clifford Forsythe | South Antrim | 1983–2000 |
Conolly Gage | Belfast South | 1945–1952 |
Robert Grosvenor | Fermanagh and South Tyrone | 1955–1964 |
James Hamilton | Fermanagh and South Tyrone | 1964–1970 |
Richard Harden | Armagh | 1948–1954 |
H. P. Harland | Belfast East | 1940–1945 |
Hugh Hayes | West Down | 1922–1922 |
Denis Stanislaus Henry | Londonderry South | 1916-1921 |
Sylvia Hermon | North Down | 2001–2010 9 |
H. Montgomery Hyde | Belfast North | 1950–1959 |
William Morgan Jellett | Dublin University | 1919–1922 |
Peter Kerr Kerr-Smiley | Antrim North | Jan 1910–1922 |
James Kilfedder | Belfast West | 1964–1970 5 |
North Down | 1970–1977 5 |
Danny Kinahan | South Antrim | 2015–2017 |
William Arthur Lindsay | Belfast South Belfast Cromac | 1917 – 1918 1918 – 1922 |
James Little | Down | 1939–1945 6 |
James Lonsdale | Mid Armagh | 1918 – 1921 |
R. J. Lynn | Belfast Woodvale Belfast West | 1918–1922 1922–1929 |
Robert McCalmont | Antrim East | 1913 – 1919 |
Thomas Edward McConnell | Belfast Duncairn; Belfast North | 1921–1922, 1922–1929 |
Harold McCusker | Armagh; Upper Bann | 1974–1983, 1983–1990 |
Alan McKibbin | Belfast East | 1950–1959 |
Patricia McLaughlin | Belfast West | 1955–1964 |
J. G. MacManaway | Belfast West | 1950 |
Stanley McMaster | Belfast East | 1959–1974 |
Malcolm Macnaghten | Londonderry North; Londonderry | 1922, 1922–1929 |
John Maginnis | Armagh | 1959–1974 |
Ken Maginnis | Fermanagh and South Tyrone | 1983–2001 |
Stratton Mills | Belfast North | 1959–1972 7 |
Thomas Moles | Belfast Ormeau Belfast South | 1918-1922 1922–1929 |
James Molyneaux | South Antrim; Lagan Valley | 1970–1983, 1983–1997 |
Charles Heron Mullan | Down | 1946–1950 |
William Frederick Neill | Belfast North | 1945–1950 |
Jim Nicholson | Newry and Armagh | 1983–1986 |
Hugh O'Neill | Mid Antrim Antrim North Antrim | 1915–1922 1922–1950 1950–1952 |
Phelim O'Neill | North Antrim | 1953–1959 |
Lawrence Orr | South Down | 1950–1974 |
Sir William Hacket Pain | South Londonderry | 1922 |
Rafton Pounder | Belfast South | 1953–1974 |
Enoch Powell | South Down | 1974–1987 8 |
James Alexander Pringle | Fermanagh and Tyrone | 1922–1929 |
David Douglas Reid | Down East Down | 1918–1922 1922–1939 |
Ronald Ross | Londonderry | 1929–1951 |
William Ross | Londonderry; East Londonderry | 1974–1983, 1983–2001 |
Arthur Warren Samuels | Dublin University | 1917–1919 |
Douglas Lloyd Savory | Queen's University, Belfast; South Antrim | 1940–1950, 1950–1955 |
Robert Sharman-Crawford | Mid Down | 1921–1922 |
John Morrow Simms | North Down; Down | 1922, 1922–1931 |
Thomas Sinclair | Queen's University, Belfast | 1918–1940 |
Walter Smiles | Down; North Down | 1945–1950, 1950–1953 |
Martin Smyth | Belfast South | 1982–2005 |
Thomas Somerset | Belfast North | 1929–1945 |
William Stewart | Belfast South | 1929–1945 |
John Taylor | Strangford | 1983–2001 |
Thomas Teevan | Belfast West | 1950–1951 |
William Thompson | West Tyrone | 1997–2001 |
David Trimble | Upper Bann | 1990–2005 |
Cecil Walker | Belfast North | 1983–2001 |
Thomas Browne Wallace | West Down | 1921–1922 |
William Wellwood | Londonderry | 1951–1955 |
Harry West | Fermanagh and South Tyrone | February–October 1974 |
William Whitla | Queen's University of Belfast | 1918–1923 |
Daniel Martin Wilson | West Down | 1918-1921 |
Henry Wilson | North Down | February–July 1922 |
- 1 Defected to the New Party.
- 2 Elected in 1974 for the Vanguard Unionist Progressive Party.
- 3 Defected to the Democratic Unionist Party.
- 4 Elected in 1956 as an Independent Unionist.
- 5 Left the party to become an Independent Unionist before forming the Ulster Popular Unionist Party.
- 6 Resigned from the party at the 1945 general election in protest at being subject to a reselection due to the retirement of Viscount Castlereagh, the other Ulster Unionist MP for the two member Down constituency and held his seat as an Independent Ulster Unionist.
- 7 Refused to follow the other Ulster Unionists in resigning the Conservative whip; later joined the Alliance Party of Northern Ireland.
- 8 Previously Conservative MP for Wolverhampton South West 1950–1974.
- 9 Left the party on 25 March 2010 to become an Independent Unionist.
Graphical representation