Elections to Carrickfergus Borough Council were held on 5 May 2005 on the same day as the other Northern Irish local government elections.

The election used three district electoral areas to elect a total of 17 councillors.

Note: "Votes" are the first preference votes.

2001: 2 x DUP, 1 x Alliance, 1 x UUP, 1 x Independent 2005: 2 x DUP, 1 x Alliance, 1 x UUP, 1 x Independent 2001-2005 Change: No change 2001: 2 x DUP, 2 x Alliance, 1 x UUP, 1 x Independent 2005: 3 x DUP, 1 x Alliance, 1 x UUP, 1 x Independent 2001-2005 Change: DUP gain from Alliance 2001: 2 x DUP, 2 x UUP, 2 x Alliance 2005: 3 x DUP, 2 x UUP, 1 x Alliance 2001-2005 Change: DUP gain from Alliance