Template:Defunct political parties in Northern Ireland

Unionist and Loyalist: Commonwealth Labour Party | Protestant Unionist Party | Ulster Constitution Party | Ulster Democratic Party | Ulster Popular Unionist Party | Ulster Progressive Unionist Association | Ulster Unionist Labour Association | Unionist Party of Northern Ireland | United Ulster Unionist Council | United Ulster Unionist Party | Vanguard Progressive Unionist Party | Volunteer Political Party
Nationalist and Republican: All Ireland Anti-Partition League | Anti-Partition of Ireland League | Federation of Labour | Irish Independence Party | National Democrats | Nationalist Party | Official Sinn Féin | People's Democracy | Red Republican Party | Saor Éire | Socialist Republican Party | Unity
Left wing^#: Belfast Labour Party | Communist Party of Ireland (Marxist-Leninist) | Communist Party of Northern Ireland | Democratic Left | Independent Socialist Party | Labour Coalition | Labour Party of Northern Ireland | League for a Workers Republic | Northern Ireland Independent Labour Party | Northern Ireland Labour Party | Republican Labour Party | Socialist Labour Alliance | United Labour Party | Workers League
Ulster nationalist: British Ulster Dominion Party | Ulster Independence Movement | Ulster Independence Party | Ulster Movement for Self-Determination
Other: Northern Ireland Women's Coalition | Social Credit Party of Great Britain and Northern Ireland | Ulster Liberal Party