Smithfield is a suburb of Sydney, in the state of New South Wales, Australia. Smithfield is located 30 kilometres (19 mi) west of the Sydney central business district, in the local government areas of the City of Fairfield and Cumberland Council. The suburb is in the Greater Western Sydney region.
Smithfield's altitude ranges from 21 to 48 m (69 to 157 ft) above sea level (towards the west, around Brenan Park, are the relatively highly elevated places). Geologically, the suburb sits on the Cumberland Plain. The suburb is a mix of residential, industrial and commercial areas, but is mostly characterized by low-density housing.