Tregear is a suburb of Sydney, in the state of New
South Wales, Australia. Tregear is 46 kilometres
(29 mi) west of the Sydney central business district,
in the local government area of the City of
Blacktown and is part of the Greater Western
Sydney region.

Tregear has privately owned housing, Department
of Housing homes and a small shopping centre.

At the 2011 census, Tregear had 3,916 people listing
Tregear as their usual residence.