Banyowla Regional Park, Regional park in Perth Hills, Western Australia.

Banyowla Regional Park is a conservation park 20 kilometres south-east of Perth's central business district, in the Perth Hills within the City of Gosnells and the City of Armadale. It is one of eleven regional parks in the Perth region, and the Ellis Brook Valley within it is named for Captain Theophilus Tighe Ellis. The land rises to about 264 metres, with the nearby town of Armadale 10.6 kilometres to the south-west.

The park's origins trace to the 1955 Stephenson-Hepburn Report, which recommended preserving private land for public use in what became the Perth Metropolitan Region in 1963. The EPA identified areas of conservation value in 1983, and in 1989 the state government gave management of regional parks to the Department of Conservation and Land Management. In August 2008, Minister David Templeman renamed Kelmscott-Martin Regional Park as Banyowla Regional Park, one of four Perth Hills parks given Aboriginal names.

The park is named after Banyowla, a Noongar elder who lived in the region during early European settlement, reflecting the land's deep connection to indigenous peoples. This recognition connects visitors to the area's original inhabitants and their enduring presence.

The park lies 20 km south-east of Perth's central business district, within the City of Gosnells and the City of Armadale, and is reached from the Armadale area about 10.6 km away. Terrain rises from around 160 m to a 264 m summit about 1 km to the east, so allow for climbs. The climate is Mediterranean, with January averages near 26 °C and July near 10 °C.

The park lies within the Perth Hills, about 20 kilometres south-east of Perth's central business district, and its ground rises to roughly 160 metres, with nearby hills reaching 264 metres. It falls inside the City of Gosnells and the City of Armadale, and the town of Armadale sits about 10.6 kilometres to the south-west.