Elections to Lisburn Borough Council were held on 30 May 1973 on the same day as the other Northern Irish local government elections. The election used five district electoral areas to elect a total of 23 councillors.
|- 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;">Vanguard</span> !colspan=2 bgcolor="" | <span style="color:black;">SDLP</span> !colspan=2 bgcolor="white"| <span style="black;">Others</span> |- |align="left"|Area A |bgcolor="40BFF5"|52.7 |bgcolor="40BFF5"|3 |16.5 |0 |8.5 |0 |0.0 |0 |17.8 |1 |4.5 |0 |4 |- |align="left"|Area B |bgcolor="40BFF5"|57.1 |bgcolor="40BFF5"|4 |19.5 |1 |13.4 |0 |10.0 |0 |0.0 |0 |0.0 |0 |5 |- |align="left"|Area C |bgcolor="40BFF5"|38.3 |bgcolor="40BFF5"|2 |20.4 |1 |12.9 |1 |13.2 |1 |6.2 |0 |9.0 |0 |5 |- |align="left"|Area D |bgcolor="40BFF5"|50.9 |bgcolor="40BFF5"|3 |10.7 |1 |24.8 |1 |7.2 |0 |5.0 |0 |1.4 |0 |5 |- |align="left"|Area E |bgcolor="40BFF5"|48.5 |bgcolor="40BFF5"|2 |18.7 |1 |26.2 |1 |0.0 |0 |0.0 |0 |6.6 |0 |4 |- |- class="unsortable" class="sortbottom" style="background:#C9C9C9" |align="left"| Total |48.9 |14 |16.8 |4 |18.1 |3 |6.6 |1 |5.3 |1 |4.3 |0 |23 |-
1973: 3 x UUP, 1 x SDLP
1973: 4 x UUP, 1 x DUP
1973: 2 x UUP, 1 x DUP, 1 x Alliance, 1 x Vanguard
1973: 3 x UUP, 1 x DUP, 1 x Alliance
1973: 2 x UUP, 1 x Alliance, 1 x DUP