Lethbridge Park is a suburb of Greater Western Sydney, in the state of New South Wales, Australia.

It is 47 kilometres west of the Sydney central business district, in the local government area of the City of Blacktown and is part of the Greater Western Sydney region.

Robert Copeland Lethbridge settled at Werrington on a land grant made on 1 January 1806, while his sister Harriet settled on the Dunheved estate.

Robert Copeland Lethbridge married King's sister, Mary.

This article related to the geography of Sydney is a stub.