Acacia Gardens is a suburb of Sydney, in the state of New South Wales, Australia, 40 kilometres north-west of the Sydney central business district, in the local government area of the City of Blacktown. Acacia Gardens is part of the Greater Western Sydney region.

According to the 2016 census of the population, there were 3,798 residents in Acacia Gardens. 56.2% of people were born in Australia. The next most common countries of birth were India 11.7% and the Philippines 5.5%. 53.9% of people only spoke English at home. Other languages spoken at home included Punjabi 6.9%, Hindi 5.1% and Tagalog 3.3%. The most common responses for religious affiliation were Catholic 28.0%, No Religion 14.0%, Hinduism 11.6%, Anglican 10.5% and Sikhism 5.9%.

Busways provides regular services to Blacktown, Castle Hill, Rouse Hill, Plumpton, St Marys and Macquarie Centre. The closest railway stations are located at Quakers Hill and Blacktown. CDC NSW provides services to Parramatta and Sydney CBD from neighbouring Stanhope Gardens.