Belfield is a suburb of Sydney, in the state of New South Wales, Australia. It is 13 kilometres (8 miles) southwest of the Sydney central business district, in the local government area of the City of Canterbury-Bankstown.

According to the 2016 census, there were 6,322 residents in Belfield. 56.6% of residents were born in Australia. The most common other countries of birth were China 5.3%, Lebanon 5.2%, South Korea 4.3%, Italy 3.3% and Greece 2.3%. The most common reported ancestries were Lebanese (14.5%), Australian (11.2%), Italian (11.0%), Chinese (9.4%) and English (9.3%).