Elections to Antrim Borough Council were held on 15 May 1985 on the same day as the other Northern Irish local government elections. The election used three district electoral areas to elect a total of 19 councillors.
<small>Note: "Votes" are the first preference votes.</small>
|- class="unsortable" align="centre" !rowspan=2 align="left"|Ward ! % <br /> !Cllrs<br /> ! % <br /> !Cllrs<br /> ! %<br /> !Cllrs<br /> ! %<br /> !Cllrs<br /> ! % <br /> !Cllrs<br /> ! %<br /> !Cllrs<br /> !rowspan=2|Total<br />Cllrs<br /> |- class="unsortable" align="center" !colspan=2 bgcolor="" | <span style="color:black;">UUP</span> !colspan=2 bgcolor="" | <span style="color:black;">DUP</span> !colspan=2 bgcolor="" | <span style="color:black;">SDLP</span> !colspan=2 bgcolor="" | <span style="color:black;">Alliance</span> !colspan=2 bgcolor="" | <span style="color:black;">Sinn Féin</span> !colspan=2 bgcolor="white"| <span style="black;">Others</span> |- |align="left"|Antrim North West |bgcolor="40BFF5"|31.7 |bgcolor="40BFF5"|2 |21.7 |1 |25.8 |1 |2.2 |0 |13.8 |1 |4.8 |0 |5 |- |align="left"|Antrim South East |bgcolor="40BFF5"|44.2 |bgcolor="40BFF5"|4 |34.6 |2 |12.6 |1 |8.6 |0 |0.0 |0 |0.0 |0 |7 |- |align="left"|Antrim Town |bgcolor="40BFF5"|42.9 |bgcolor="40BFF5"|3 |26.9 |2 |16.2 |1 |12.5 |1 |0.0 |0 |1.5 |0 |7 |- |- class="unsortable" class="sortbottom" style="background:#C9C9C9" |align="left"| Total |39.7 |9 |28.4 |5 |17.8 |3 |7.6 |1 |4.5 |1 |2.0 |0 |19 |-
1985: 2 x UUP, 1 x SDLP, 1 x DUP, 1 x Sinn Féin
1985: 4 x UUP, 2 x DUP, 1 x SDLP
1985: 3 x UUP, 2 x DUP, 1 x SDLP, 1 x Alliance