This is a list of Nationalist Party MPs. It includes all members of Parliament elected to the British House of Commons representing the Nationalist Party (Ireland) since 1918. Members of the Northern Ireland House of Commons are not listed. Some Nationalist MPs did not take their seats.
| Member | Constituency | Years served |
|---|---|---|
| Patrick Cunningham | Fermanagh and Tyrone | 1935–1950 |
| Joseph Devlin | North Kilkenny Belfast West Belfast Falls Fermanagh and Tyrone | 1902–1906 1906–1918 1918–1922 1929–1934 |
| Patrick Donnelly | Armagh South | 1918–1922 |
| Thomas Harbison | East Tyrone North East Tyrone Fermanagh and Tyrone | 1918 1918–1922 1922–1924; 1929–1931 |
| Cahir Healy | Fermanagh and Tyrone Fermanagh and South Tyrone | 1922–1924; 1931–1935 1950–1955 |
| Donegal East | Jan 1910–1922 | |
| Jeremiah McVeagh | Down South | 1902–1922 |
| Anthony Mulvey | Fermanagh and Tyrone Mid Ulster | 1935–1950 1950–1951 |
| T. P. O'Connor | Liverpool Scotland | 1885–1929 |
| William Redmond | East Tyrone Waterford City | Dec 1910–1918 1918–1922 |
| Joseph Francis Stewart | Fermanagh and Tyrone | 1934–1935 |