Elections to Antrim 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 DUP, 1 x Independent, 1 x Independent Nationalist 1977: 2 x UUP, 1 x DUP, 1 x Independent, 1 x Independent Nationalist 1973-1977 Change: No change 1973: 4 x UUP, 1 x Alliance 1977: 3 x UUP, 1 x DUP, 1 x Alliance 1973-1977 Change: DUP gain from UUP 1973: 3 x UUP, 1 x Alliance, 1 x Vanguard 1977: 2 x UUP, 2 x Alliance, 1 x DUP 1973-1977 Change: DUP gain from Vanguard