Elections to Ballymoney Borough Council were held on 30 May 1973 on the same day as the other Northern Irish local government elections. The election used three district electoral areas to elect a total of 16 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 /> !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;">SDLP</span> !colspan=2 bgcolor="" | <span style="color:black;">DUP</span> !colspan=2 bgcolor="" | <span style="color:black;">Alliance</span> !colspan=2 bgcolor="white"| <span style="black;">Others</span> |- |align="left"|Area A |17.1 |1 |0.0 |0 |34.2 |1 |0.0 |0 |bgcolor="#DDDDDD"|48.7 |bgcolor="#DDDDDD"|2 |4 |- |align="left"|Area B |bgcolor="40BFF5"|35.9 |bgcolor="40BFF5"|3 |19.3 |2 |0.0 |0 |3.9 |0 |40.9 |3 |8 |- |align="left"|Area C |1.7 |0 |0.0 |0 |0.0 |0 |20.1 |1 |bgcolor="#DDDDDD"|78.2 |bgcolor="#DDDDDD"|3 |4 |- |- class="unsortable" class="sortbottom" style="background:#C9C9C9" |align="left"| Total |33.3 |4 |9.3 |2 |7.8 |1 |7.7 |1 |41.9 |8 |16 |-
1973: 1 x DUP, 1 x UUP, 1 x Independent Unionist, 1 x Independent
1973: 3 x UUP, 2 x SDLP, 2 x Independent Unionist, 1 x Independent Nationalist
1973: 2 x Independent, 1 x Alliance, 1 x Independent Unionist