Fairfield Heights is a suburb of Sydney, in the state of New South Wales, Australia. Fairfield Heights is located 31 kilometres west of the Sydney central business district in the local government area of the City of Fairfield. Fairfield Heights is part of the Greater Western Sydney region.
Fairfield Heights shares the postcode of 2165 with the separate suburbs of Fairfield, Fairfield East and Fairfield West. The majority of residents speak a language other than English at home, with the most common one being Assyrian Neo-Aramaic. Fairfield Heights, like Fairfield, is also an ethnic enclave of Assyrians.
The elevation of this suburb is approximately between 30–40 metres above mean sea level, owing to its name.