Elections to Carrickfergus Borough Council were held on 18 May 1977 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.

1973: 2 x UUP, 1 x United Loyalist, 1 x Alliance 1977: 2 x Alliance, 2 x UUP, 1 x United Loyalist 1973-1977 Change: Alliance gain from United Loyalist 1973: 2 x UUP, 1 x Alliance, 1 x United Loyalist, 1 x Independent 1977: 2 x UUP, 2 x Alliance, 1 x DUP 1973-1977 Change: Alliance and DUP gain from United Loyalist and Independent 1973: 2 x United Loyalist, 1 x UUP, 1 x Alliance, 1 x Loyalist 1977: 2 x DUP, 1 x Alliance, 1 x UPNI, 1 x UUP 1973-1977 Change: DUP (two seats) and UPNI gain from United Loyalist (two seats) and Loyalist