Ajax-Pickering is a federal and provincial electoral district in Ontario, Canada, that has been represented in the Canadian House of Commons since 2004. It will elect a member of the Legislative Assembly of Ontario in the next provincial election.

Its population in 2001 was 100,248. The district includes the Town of Ajax and the northern part of the City of Pickering in the eastern suburbs of Toronto. The electoral district was created in 2003: 57.6% of the population of the riding came from Pickering—Ajax—Uxbridge and 44.8% from Whitby—Ajax.