The 2012 Conwy County Council election took place on 3 May 2012 to elect members of Conwy County Borough Council in Wales. It was on the same day as other 2012 United Kingdom local elections. The previous elections took place on 1 May 2008 and the next elections took place on 4 May 2017.
<sup>[a]</sup> <small>Includes Betws yn Rhos councillor who did not declare his affiliation at the election</small>
(*) represents a candidate running from previous election. (~) represents an equivalent to a previous candidate.
Conservative councillor, Paul Roberts, resigned in protest at how the local authority was being run. Edwards had lost the seat to Roberts at the 2012 election, but won it back at this by-election.
Resignation of Independent councillor Ahmed Jalil.
Labour councillor Jean Stubbs resigned and her husband Rick Stubbs won the seat at the by-election.