Ambarvale is a suburb of south-western Sydney in New South Wales, Australia. Ambarvale is located 55 kilometres southwest of the Sydney central business district, in the local government area of the City of Campbelltown, and is part of the Macarthur region. The suburb is predominantly residential and contains a mix of public and private housing.

According to the 2016 census of population, there were 169,420 people in Ambarvale.

Macarthur railway station is located just north of Ambarvale, providing connection to Campbelltown Liverpool and the Sydney central business district via the Airport & South Line of the Sydney Trains network. NSW TrainLink also services Macarthur providing connections to the Southern Highlands, Canberra, Griffith and Melbourne. Bus services are provided by Transit Systems, leaving from Kellicar Road (under the bridge). The routes are 870–4, 886–89, 890–98 to and from Campbelltown.