Elections to Belfast City Council were held on 5 May 2011 on the same day as the other Northern Irish local government elections. The election used nine district electoral areas to elect a total of 51 councillors, most representing the more heavily populated north and west.
Sinn Féin emerged as the largest party, and Niall àDonnghaile became Lord Mayor.
<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 /> ! %<br /> !Cllrs<br /> !rowspan=2|Total<br />Cllrs<br /> |- class="unsortable" align="center" !colspan=2 bgcolor="" | <span style="color:black;">Sinn Féin</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;">UUP</span> !colspan=2 bgcolor="" | <span style="color:black;">PUP</span> !colspan=2 bgcolor="white"| <span style="black;">Others</span> |- |align="left"|Balmoral |14.7 |1 |19.6 |1 |bgcolor="#99FF66"|29.0 |bgcolor="#99FF66"|2 |17.6 |1 |15.1 |1 |0.0 |0 |3.9 |0 |6 |- |align="left"|Castle |26.6 |2 |bgcolor="#D46A4C"|30.5 |bgcolor="#D46A4C"|2 |22.4 |1 |6.9 |0 |11.8 |1 |0.0 |0 |1.7 |0 |6 |- |align="left"|Court |2.8 |0 |bgcolor="#D46A4C"|64.4 |bgcolor="#D46A4C"|3 |1.5 |0 |1.2 |0 |6.0 |0 |9.7 |1 |14.4 |1 |5 |- |align="left"|Laganbank |17.3 |1 |14.1 |1 |bgcolor="#99FF66"|27.4 |bgcolor="#99FF66"|2 |19.0 |1 |11.5 |0 |0.0 |0 |10.8 |0 |5 |- |align="left"|Lower Falls |bgcolor="#008800"|75.4 |bgcolor="#008800"|4 |0.0 |0 |10.2 |1 |0.0 |0 |0.0 |0 |0.0 |0 |14.4 |0 |5 |- |align="left"|Oldpark |bgcolor="#008800"|53.1 |bgcolor="#008800"|3 |25.4 |2 |11.2 |1 |2.9 |0 |5.1 |0 |0.0 |0 |5.0 |0 |6 |- |align="left"|Pottinger |11.3 |1 |bgcolor="#D46A4C"|36.8 |bgcolor="#D46A4C"|3 |4.8 |0 |19.9 |1 |8.3 |0 |10.7 |1 |8.1 |0 |6 |- |align="left"|Upper Falls |bgcolor="#008800"|67.8 |bgcolor="#008800"|4 |1.4 |0 |18.1 |1 |1.3 |0 |0.0 |0 |0.0 |0 |11.3 |0 |5 |- |align="left"|Victoria |0.0 |0 |32.6 |3 |1.5 |0 |bgcolor="#F6CB2F"|36.5 |bgcolor="#F6CB2F"|3 |17.9 |1 |6.5 |0 |5.1 |0 |7 |- class="unsortable" class="sortbottom" style="background:#C9C9C9" |align="left"| Total |30.9 |16 |23.4 |15 |13.8 |8 |12.6 |6 |8.6 |3 |2.8 |2 |8.0 |1 |51 |-
2005: 2 x SDLP, 2 x DUP, 1 x Alliance, 1 x UUP<br /> 2011: 2 x SDLP, 1 x DUP, 1 x Alliance, 1 x UUP, 1 x Sinn Féin<br /> 2005-2011 Change: Sinn Féin gain from DUP
2005: 2 x DUP, 2 x SDLP, 1 x Sinn Féin, 1 x UUP<br /> 2011: 2 x DUP, 2 x Sinn Féin, 1 x SDLP, 1 x UUP<br /> 2005-2011 Change: Sinn Féin gain from SDLP
2005: 3 x DUP, 1 x PUP, 1 x Independent<br /> 2011: 3 x DUP, 1 x PUP, 1 x Independent<br /> 2005-2011 Change: No change
2005: 2 x SDLP, 1 x Sinn Féin, 1 x DUP, 1 x UUP<br /> 2011: 2 x SDLP, 1 x Sinn Féin, 1 x DUP, 1 x Alliance<br /> 2005-2011 Change: Alliance gain from UUP
2005: 5 x Sinn Féin<br /> 2011: 4 x Sinn Féin, 1 x SDLP<br /> 2005-2011 Change: SDLP gain from Sinn Féin
2005: 3 x Sinn Féin, 1 x DUP, 1 x SDLP, 1 x UUP<br /> 2011: 3 x Sinn Féin, 2 x DUP, 1 x SDLP<br /> 2005-2011 Change: DUP gain from UUP
2005: 3 x DUP, 1 x UUP, 1 x PUP, 1 x Alliance<br /> 2011: 3 x DUP, 1 x Alliance, 1 x Sinn Féin, 1 x PUP<br /> 2005-2011 Change: Sinn Féin gain from UUP
2005: 4 x Sinn Féin, 1 x SDLP<br /> 2011: 4 x Sinn Féin, 1 x SDLP<br /> 2005-2011 Change: No change
2005: 3 x DUP, 2 x UUP, 2 x Alliance<br /> 2011: 3 x Alliance, 3 x DUP, 1 x UUP<br /> 2005-2011 Change: Alliance gain from UUP