Mount Richon is a suburb of Perth, Western Australia in the City of Armadale. Formerly part of Armadale and Wungong, Mount Richon was approved as a suburb in 2003. It occupies the western slope of the Darling Range from the intersection of Albany and South Western Highways south to Leys Rise, is bounded on the west by South-Western Highway and is bounded on the east by Albany Highway and Bungendore Park. Mount Richon is named after a vineyard that formerly existed in the area.