Kelmscott is a southeastern suburb of Perth, Western Australia in the local government area of the City of Armadale. It is 23 kilometres (14 mi) southeast of Perth along the Albany Highway.
Kelmscott was one of the very early towns established in the Swan River Colony and was named after Kelmscott, Oxfordshire, the birthplace of the first Anglican clergyman in the colony, Thomas Hobbes Scott (1783–1860). The suburb of Kelmscott is bisected by the Canning River. On the western side of the river is the flat coastal plain upon which most of Perth is situated. This area includes the Stargate Kelmscott and Kelmscott Village shopping areas along Albany Highway, the light industrial area, the Kelmscott Senior High School and a residential area. To the east, the suburb rises into the western Darling Scarp.