1977 Coleraine Borough Council election

Elections to Coleraine 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 20 councillors.

Election results
Note: "Votes" are the first preference votes.

Districts summary
!rowspan=2 align="left"|Ward ! %
 * - class="unsortable" align="centre"

!Cllrs

! %

!Cllrs

! %

!Cllrs

! %

!Cllrs

! %

!Cllrs

!rowspan=2|Total Cllrs

!colspan=2 bgcolor="" | UUP !colspan=2 bgcolor="" | DUP !colspan=2 bgcolor="" | Alliance !colspan=2 bgcolor="" | SDLP !colspan=2 bgcolor="white"| Others
 * - class="unsortable" align="center"
 * align="left"|Area A
 * bgcolor="40BFF5"|41.2
 * bgcolor="40BFF5"|3
 * 18.5
 * 1
 * 4.7
 * 0
 * 21.9
 * 1
 * 13.7
 * 1
 * 6
 * align="left"|Area B
 * bgcolor="40BFF5"|52.4
 * bgcolor="40BFF5"|4
 * 0.0
 * 0
 * 16.9
 * 1
 * 11.2
 * 1
 * 19.5
 * 1
 * 7
 * align="left"|Area C
 * 24.6
 * 3
 * bgcolor="#D46A4C"|30.4
 * bgcolor="#D46A4C"|1
 * 11.1
 * 1
 * 0.0
 * 0
 * 33.9
 * 2
 * 7
 * - class="unsortable" class="sortbottom" style="background:#C9C9C9"
 * align="left"| Total
 * 38.2
 * 10
 * 17.6
 * 2
 * 10.6
 * 2
 * 10.5
 * 2
 * 23.1
 * 4
 * 20
 * }
 * 23.1
 * 4
 * 20
 * }
 * }

Area A
1973: 4 x UUP, 1 x SDLP, 1 x Independent Unionist

1977: 3 x UUP, 1 x SDLP, 1 x DUP, 1 x Independent Unionist

1973-1977 Change: DUP gain from UUP

Area B
1973: 5 x UUP, 2 x Alliance

1977: 4 x UUP, 1 x Alliance, 1 x SDLP, 1 x Independent Unionist

1973-1977 Change: SDLP gain from Alliance, Independent Unionist leaves UUP

Area C
1973: 4 x UUP, 2 x Independent, 1 x Alliance

1977: 3 x UUP, 2 x Independent, 1 x DUP, 1 x Alliance

1973-1977 Change: DUP gain from UUP