Ajax—Pickering was a federal electoral district in Ontario, Canada, that had been represented in the House of Commons of Canada since 2011 by Conservative MP Chris Alexander. Its population in 2001 was 100,215. The district included 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 43.3% of Pickering—Ajax—Uxbridge and 44.8% from Whitby—Ajax.