Watermans Bay is a northern coastal suburb of Perth, the capital city of Western Australia. Its local government area is the City of Stirling.

The City of Stirling is a local government area in the northern suburbs of the Western Australian capital city of Perth about 10 kilometres (6 mi) north of Perth's central business district. The City covers an area of 105.2 square kilometres (40.6 sq mi) and has a population of over 223,000, making it the largest local government area by population in Western Australia.