| Peter O'Hagan | |
| Office: | Mayor of Lisburn |
| Term Start: | 1998 |
| Term End: | 2000 |
| Office1: | Member of Lisburn City Council |
| Constituency1: | Killultagh |
| Term Start1: | 17 May 1989 |
| Term End1: | 5 May 2005 |
| Predecessor1: | Paddy Ritchie |
| Successor1: | Pat Catney |
| Birth Place: | County Antrim, Northern Ireland |
| Death Date: | 23 December 2009 |
| Nationality: | Irish |
| Party: | Social Democratic and Labour |
Peter O'Hagan was an Irish Nationalist politician who sat as a Social Democratic and Labour Party (SDLP) Councillor on Lisburn City Council. He was one of three SDLP members of the predominantly Unionist council.
O'Hagan represented the electoral ward of Killultagh,[1] County Antrim. In 1998, O'Hagan became the first nationalist Mayor of Lisburn. In 1996, he was an unsuccessful candidate in the Northern Ireland Forum election in Lagan Valley.[2]
O'Hagan died on 23 December 2009.[3]