1986 Fermanagh and South Tyrone by-election
# 1986 Fermanagh and South Tyrone by-election

The 1986 Fermanagh and South Tyrone by-election was one of the fifteen 1986 Northern Ireland by-elections held on 23 January 1986, to fill vacancies in the Parliament of the United Kingdom caused by the resignation in December 1985 of all sitting Unionist Members of Parliament (MPs). The MPs, from the Ulster Unionist Party, Democratic Unionist Party and Ulster Popular Unionist Party, did this to highlight their opposition to the Anglo-Irish Agreement. Each of their parties agreed not to contest seats previously held by the others, and each outgoing MP stood for re-election.

The Ulster Unionist candidate Ken Maginnis was able to survive with less than 50% of the vote due to a split Nationalist vote.

1986 Fermanagh and South Tyrone by-election :

| Party | Party | Candidate | Votes | % | ±% |
| - | - | - | - | - | - |
| | Ulster Unionist | Ken Maginnis | 27,857 | 49.7 | +2.1 |
| | Sinn Féin | Owen Carron | 15,278 | 27.2 | −7.6 |
| | SDLP | Austin Currie | 12,081 | 21.5 | +5.0 |
| | Workers' Party | David Kettyles | 864 | 1.5 | −0.4 |
| Majority | Majority | Majority | 12,579 | 22.5 | +9.7 |
| Turnout | Turnout | Turnout | 56,080 | 80.4 | -8.2 |
| Registered electors | Registered electors | Registered electors | 69,767 | | |
| | Ulster Unionist hold | Ulster Unionist hold | Swing | | |
