Sunbury is a town located 40.4 kilometres (25.1 mi) north-west of Melbourne's central business district, in the state of Victoria, Australia. Its local government area is the City of Hume. At the 2011 census, Sunbury had a population of 33,062. Statistically, Sunbury is considered part of Greater Melbourne.

Sunbury is a north-western suburb of Melbourne. The Victorian government's 2009 decision to extend the Urban Growth Boundary saw Sunbury absorbed by Melbourne's suburban expansion in 2011