Elections to Lisburn Borough Council were held on 15 May 1985 on the same day as the other Northern Irish local government elections. The election used four district electoral areas to elect a total of 28 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;">Alliance</span> !colspan=2 bgcolor="" | <span style="color:black;">SDLP</span> !colspan=2 bgcolor="" | <span style="color:black;">Sinn Féin</span> !colspan=2 bgcolor="white"| <span style="black;">Others</span> |- |align="left"|Downshire |bgcolor="40BFF5"|46.7 |bgcolor="40BFF5"|3 |41.6 |3 |11.7 |1 |0.0 |0 |0.0 |0 |0.0 |0 |7 |- |align="left"|Dunmurry Cross |bgcolor="40BFF5"|30.8 |bgcolor="40BFF5"|2 |18.1 |1 |7.8 |1 |13.3 |1 |22.8 |2 |7.2 |0 |7 |- |align="left"|Killultagh |bgcolor="40BFF5"|53.2 |bgcolor="40BFF5"|4 |27.3 |2 |7.7 |0 |11.8 |1 |0.0 |0 |0.0 |0 |7 |- |align="left"|Lisburn Town |39.1 |4 |bgcolor="#D46A4C"|43.0 |bgcolor="#D46A4C"|2 |17.9 |1 |0.0 |0 |0.0 |0 |0.0 |0 |7 |- |- class="unsortable" class="sortbottom" style="background:#C9C9C9" |align="left"| Total |42.8 |13 |32.1 |8 |11.0 |3 |6.6 |2 |5.7 |2 |1.8 |0 |28 |-
1985: 3 x UUP, 3 x DUP, 1 x Alliance
1985: 2 x Sinn Féin, 2 x UUP, 1 x SDLP, 1 x DUP, 1 x Alliance
1985: 4 x UUP, 2 x DUP, 1 x SDLP
1985: 4 x UUP, 2 x DUP, 1 x Alliance