| John Tierney | |
| Office4: | Chief whip of the SDLP in the Northern Ireland Assembly |
| Leader4: | Mark Durkan |
| Term Start4: | 2002 |
| Term End4: | 26 November 2003 |
| Office5: | Member of the Legislative Assembly for Foyle |
| Assembly5: | Northern Ireland |
| Term Start5: | 25 June 1998 |
| Term End5: | 26 November 2003 |
| Predecessor5: | Constituency created |
| Successor5: | Pat Ramsey |
| Office: | Mayor of Derry |
| Term Start: | 1984 |
| Term End: | 1985 |
| Predecessor: | Len Green |
| Successor: | John McNickle |
| Office1: | Member of Derry City Council |
| Constituency1: | Northland |
| Term Start1: | 26 September 2007 |
| Term End1: | 25 September 2013 |
| Successor1: | Shauna Cusack |
| Constituency2: | Northland |
| Term Start2: | 15 May 1985 |
| Term End2: | 7 June 2001 |
| Predecessor2: | District created |
| Successor2: | Helen Quigley |
| Constituency3: | Londonderry Area D |
| Term Start3: | 20 May 1981 |
| Term End3: | 15 May 1985 |
| Predecessor3: | Raymond McClean |
| Successor3: | District abolished |
| Office6: | Member of the Northern Ireland Forum for Foyle |
| Term Start6: | 30 May 1996 |
| Term End6: | 25 April 1998 |
| Birth Date: | 9 December 1951 |
| Birth Place: | Derry, Northern Ireland |
| Party: | Social Democratic and Labour Party |
John Tierney (born 9 December 1951) is an Irish Social Democratic and Labour Party (SDLP) politician who served as a Member of the Legislative Assembly (MLA) for Foyle from 1998 to 2003.
Born in Derry, Tierney worked as a tool setter before joining the Social Democratic and Labour Party (SDLP). He was elected to Derry City Council in 1981, and served as the Mayor of Derry in 1984. In 1996, Tierney was elected to the Northern Ireland Forum for Foyle, and he held his seat at the 1998 Northern Ireland Assembly election. He stood down from the Council in 2001, while the following year, he became the whip of the SDLP group on the Assembly.[1]
Tierney stood down from the Assembly at the 2003 election,[2] and in 2007 was co-opted back on to Derry City Council.[3]