St Andrews is a suburb of Sydney, in the state of New South Wales, Australia 55 kilometres south-west of the Sydney central business district, in the local government area of the City of Campbelltown.

In 1957, the first plans were announced by the state government to create a large satellite city in the area but the idea foundered after locals opposed it because the land was such good farming land.

In 1976, the name St Andrews was approved for the suburb and in 1977, Landcom began building homes in the area.

The following year a primary school was opened and the suburb was well established.

The most common languages spoken other than English were Arabic (7.7%), Hindi (2.1%) and Tagalog (2.0%).