Oldham was a parliamentary constituency centred on the town of Oldham, England. It returned two Members of Parliament (MPs) to the House of Commons of the Parliament of the United Kingdom. The constituency was created by the Great Reform Act of 1832 and was abolished for the 1950 general election when it was split into the Oldham East and Oldham West constituencies.

Oldham is a town in Greater Manchester, England, it lies amongst the Pennines on elevated ground between the rivers Irk and Medlock, 5 miles (8.0 km) southeast of Rochdale, and 7 miles (11.3 km) northeast of Manchester. It is the administrative centre of the Metropolitan Borough of Oldham, which had a population of 237,110 in 2019.