Macarthur is a region in the south-west part of the Greater Sydney area, in the state of New South Wales, Australia.

The region includes the local government areas of the City of Campbelltown, Camden Council, and Wollondilly Shire.

The region is bounded at the north by Glenfield; at the south by Yanderra; at the east by the town of Appin; and at the west by the hamlet Nattai.

Most of the area is taken up by the semi-rural Wollondilly Shire; most of the population lives within the satellite city of Campbelltown and its surrounding suburbs.

Campbelltown and Camden were once rural towns which formed the nucleus of new urban communities created following the Three Cities Structure Plan 1973.

The land still contains reminders of their past lives in rock engravings, cave paintings, axe grinding grooves and shell middens.

The lands of the Tharawal language Nation extended from approximately Botany Bay to Shoalhaven and to the foothills of the mountain ranges.

European history began in 1788 shortly after settlement at Sydney Cove, when the colony's entire herd of cattle (four cows and two bulls) strayed from their enclosure and were lost.

The early settlement of the area was described by Lachlan Macquarie in his journals, whose accounts include the description of Elizabeth Macarthur being met in a 'miserable' bark hut, the only accommodation then existing at Camden Park.

It is home to a large collection of native plants, and includes facilities such as picnic areas (with barbecues), walking trails and a restaurant.

Centrepiece of the original 2023.5 hectares (5000 acres) granted to Macarthur by the Governor of New South Wales, at the request of Lord Camden, is Camden Park House, designed by John Verge in the neo-Palladian style favoured by the colony's wealthy pastoral 'exclusives', and built between 1832 and 1834; Macarthur himself did not live to see the house completed.

This original 'cottage ornée', which was demolished in the early 1900s and replaced with the current weatherboard structure, was used by the family when visiting the property until the construction of Camden Park House on an adjacent hilltop.

Currently, the farm is home to descendants of sheep that were brought by the Macarthurs and has a functioning vineyard that produces wine as well as orchards.

[8] Wirrimbirra Sanctuary is a small 95 hectare reserve and property that is under the authority of the National Trust of Australia that was given by Thistle Harris who opened the park in the 1960s.

Thistle opened reserve as a tribute to her late husband and preserve 'Bargo Brush' plants and animals as Bargo is believed to be the first areas where colonial explorers saw the lyrebird, koala and wombat.

Moreover, the team's leagues club is located adjacent to the stadium as well as an athletics centre and large tennis court complex.