Dunham Massey is a civil parish in the Metropolitan Borough of Trafford, Greater Manchester, England. The parish includes the villages of Sinderland Green, Dunham Woodhouses and Dunham Town, along with Dunham Massey Hall and Park, formerly the home of the last Earl of Stamford and owned by the National Trust since 1976. Dunham Massey is in the historic county of Cheshire, but since 1974 has been part of Trafford Metropolitan Borough; the nearest town is Altrincham. At the 2001 census, the parish had a population of 475.

Trafford is a metropolitan borough of Greater Manchester, England, with an estimated population of 236,301 in 2022. It covers 106 square kilometres (41 sq mi) and includes the area of Old Trafford and the towns of Altrincham, Stretford, Urmston, Partington and Sale. The borough was formed in 1974 as a merger of six former districts and part of a seventh. The River Mersey flows through the borough, separating North Trafford from South Trafford, and the historic counties of Lancashire and Cheshire. Trafford is the seventh-most populous district in Greater Manchester.