Chester Hill is a suburb of Sydney, in the state of New South Wales, Australia. It is located 24 kilometres west of the Sydney central business district, in the local government area of the City of Canterbury-Bankstown. Chester Hill is part of the Greater Western Sydney region.

The suburb is mainly residential, with some commercial and industrial areas. It is home to a large number of ethnic groups, including a large Lebanese community. The main shopping centre is Chester Hill Shopping Centre, located on the corner of Chester Hill Road and The Boulevarde.

The suburb is serviced by Chester Hill railway station, which is on the Bankstown Line of the Sydney Trains network. There are also a number of bus services that run through the suburb.

Chester Hill is home to a number of parks and reserves, including the Chester Hill Reserve, which is a large park with a playground, picnic areas and walking tracks. The suburb also has a number of sporting clubs, including the Chester Hill Hornets Rugby League Club.