City of York Council election, 2015

The 2015 City of York Council election took place on 7 May 2015 to elect members of City of York Council in England. The whole council was up for election. Turnout was substantially up across the city due to the election being held on the same day as the general election and other local elections in England.

Since the previous election in 2011 a review of ward boundaries had affected some wards, although the total number of councillors remained at 47. The following wards remained unchanged from 2011: Acomb, Bishopthorpe, Dringhouses and Woodthorpe, Haxby and Wigginton, Holgate, Huntington and New Earswick, Micklegate, Strensall, Westfield and Wheldrake. All other wards saw boundary changes and a new ward, Copmanthorpe, was created from the former Rural West York Ward.

The election saw heavy losses for the ruling Labour Party, which had won overall control of the council in 2011, losing more than 40% of the 26 seats won at the previous election. Several senior Labour councillors were defeated including the party's deputy leader Tracey Simpson-Laing and Cabinet members Dave Merrett and Linsay Cunningham. The Conservatives, Liberal Democrats and Greens all made gains and two Independent councillors were also elected. A record number of new councillors were elected, almost half of the entire Council, with the York Press reporting that "of the 47 seats contested, 25 were won by candidates with council experience while 22 were won by debutants." Following talks between the political groups after the election, the Conservatives and Liberal Democrats agreed to run the Council as a joint administration.

In October 2015, Dafydd Williams stepped down as leader of the local Labour Party with Janet Looker appointed to the role. Council leader Chris Steward resigned as leader of the Conservative group after suffering a stroke in May 2016, and was replaced by David Carr.