Elections to Carrickfergus Borough Council were held on 17 May 1989 on the same day as the other Northern Irish local government elections.

The election used three district electoral areas to elect a total of 15 councillors.

Note: "Votes" are the first preference votes.

1985: 2 x UUP, 1 x Alliance, 1 x DUP, 1 x PUP 1989: 2 x Alliance, 1 x DUP, 1 x UUP, 1 x PUP 1985-1989 Change: Alliance gain from UUP 1985: 3 x UUP, 1 x Alliance, 1 x DUP 1989: 2 x UUP, 1 x Alliance, 1 x DUP, 1 x Independent Unionist 1985-1989 Change: Independent Unionist leaves UUP 1985: 2 x UUP, 1 x Alliance, 1 x DUP, 1 x Independent Unionist 1989: 2 x Independent Unionist, 1 x UUP, 1 x UUP, 1 x DUP 1985-1989 Change: Independent Unionist leaves UUP