Beeliar is a suburb of Perth, Western Australia, located within the City of Cockburn. The name refers to the Beeliar people, a group of Aboriginal Australians who had land rights over the southern half of Perth's metropolitan area. The suburb contains the Thomsons Lake Nature Reserve.

The City of Cockburn is a local government area in the southern suburbs of the Western Australian capital city of Perth about 8 kilometres (5 mi) south of Fremantle and about 24 kilometres (15 mi) south of Perth's central business district. The City covers an area of 167.5 square kilometres (64.7 sq mi) and had a population of over 104,000 as at the 2016 Census.