Elections to Newry and Mourne District Council were held on 5 May 2005 on the same day as the other Northern Irish local government elections.

The election used five district electoral areas to elect a total of 30 councillors.

Note: "Votes" are the first preference votes.

2001: 4 x SDLP, 2 x Sinn Féin, 1 x Independent 2005: 3 x SDLP, 2 x Sinn Féin, 1 x Green, 1 x Independent 2001-2005 Change: Green gain from SDLP 2001: 3 x Sinn Féin, 3 x SDLP, 1 x Independent 2005: 3 x Sinn Féin, 3 x SDLP, 1 x Independent 2001-2005 Change: No change 2001: 4 x Sinn Féin, 1 x SDLP 2005: 4 x Sinn Féin, 1 x SDLP 2001-2005 Change: No change 2001: 3 x Sinn Féin, 2 x UUP, 1 x SDLP 2005: 3 x Sinn Féin, 1 x UUP, 1 x SDLP, 1 x DUP 2001-2005 Change: DUP gain from UUP 2001: 2 x UUP, 1 x DUP, 1 x SDLP, 1 x Sinn Féin 2005: 2 x UUP, 1 x DUP, 1 x SDLP, 1 x Sinn Féin 2001-2005 Change: No change