Northumberland—Durham

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Northumberland—Durham was a federal electoral district represented in the House of Commons of Canada from 1968 to 1979. It was located in the province of Ontario. This riding was created in 1966 from parts of Durham and Northumberland and a small part of Hastings—Frontenac ridings.

It consisted of the County of Durham, the Townships of Alnwick, Haldimand, Hamilton, South Monaghan and Percy in the County of Northumberland, the Town of Cobourg and the Village of Hastings.

The electoral district was abolished in 1976 when it became part of Durham—Northumberland, Northumberland and Peterborough ridings.