Glenwood is a suburb of Sydney, in the state of New South Wales, Australia. Glenwood is located 33 kilometres north-west of the Sydney central business district in the local government area of the City of Blacktown and part of the Greater Western Sydney region.

The Westlink M7 Motorway runs along the southern border of the suburb and provides a link to the M2 Hills Motorway. Old Windsor Road borders the suburb to the east & Sunnyholt Rd borders the suburb to the west & north.