Campbelltown is a suburb and major centre in the metropolitan area of Sydney, New South Wales, Australia. It is located in Greater Western Sydney 50 kilometres (31 mi) south-west of the Sydney central business district. Campbelltown is the administrative seat of the local government area of the City of Campbelltown. It is also acknowledged on the register of the Geographical Names Board of New South Wales as one of only four cities within the Sydney metropolitan area.
Campbelltown gets its name from Elizabeth Campbell, the wife of former Governor of New South Wales Lachlan Macquarie. Originally called Campbell-Town, the name was later simplified to the current Campbelltown.