Clemton Park is a suburb in south-western Sydney, in the state of New South Wales, Australia. It is 13 kilometres south-west of the Sydney central business district in the City of Canterbury-Bankstown. The suburb is approximately bounded by Cup and Saucer Creek, Bexley Road in the east, William Street in the south and Kingsgrove Road, but excludes most of the properties which face onto those roads. Those properties are instead in the neighbouring suburbs of Earlwood, Kingsgrove and Campsie.

At the 2011 census, there were 1,565 residents in Clemton Park. In Clemton Park, 58.1% of people were born in Australia. The most common countries of birth were Greece 6.8%, China 4.7%, Portugal 3.7%, Lebanon 3.0% and Italy 2.2%. Family households (77.1%) were the main type of household, with 21.5% single person households and 1.5% group households.