Mulgoa is a village, located in the local government area of the City of Penrith, in the region of western Sydney, in the state of New South Wales, Australia.

Mulgoa covers an area of 5,530 hectares (13,700 acres), south of the Penrith suburbs of Regentville and Glenmore Park.

The Aboriginal peoples mostly lived a hunter-gatherer lifestyle governed by traditional laws, which had their origins in their mythology known as The Dreaming.

[4] Not far away dwelt Cox's friend Sir John Jamison, who erected the colony's finest mansion, Regentville House, in 1824, on an eminence overlooking the Nepean River.

[5][6] The centre of Mulgoa's spiritual life in the colonial era was St Thomas' Anglican Church, which dates from 1838.

It was the first public building in the Mulgoa Valley and was constructed out of sandstone and cedar on paddocks donated by the Cox family, with Sir John Jamison serving as one of its patrons.

[9] In May 1942, during the Second World War and after the bombing of Darwin, a group of Aboriginal children were evacuated from "The Bungalow" in Alice Springs, Northern Territory[10] to an Anglican home Mulgoa.

At the state level, it is part of the Electoral district of Badgerys Creek, represented by Tanya Davies, of the Liberal Party.