Leaders of political parties in the United Kingdom Leaders in the Northern Ireland Assembely Leaders in the Northern Ireland Assembely

| Leader | Party | Leader_s_Seat | Number_of_Seats | Leader_since |
|---|---|---|---|---|
| Peter Robinson | Democratic Unionist Party | Belfast East | 38 | 31 May 2008 |
| Raymond McCartney | Sinn Féin | Foyle | 29 | 2011 |
| Tom Elliott | Ulster Unionist Party | Fermanagh and South Tyrone | 16 | 22 September 2010 |
| Margaret Ritchie | Social Democratic and Labour Party | South Down | 14 | 7 February 2010 |
| David Ford | Alliance Party of Northern Ireland | South Antrim | 8 | 2001 |
| Steven Agnew | Green Party in Northern Ireland | North Down | 1 | 2010 |
| Jim Allister | Traditional Unionist Voice | North Antrim | 1 | 2007 |