Mount Henry Peninsula is a land feature and reserve located 11 km south of Perth, Western Australia, on the north bank of the Canning River near the Mount Henry Bridge in Salter Point, Western Australia. It covers 11.9 hectares, and includes both Banksia attenuata and Banksia menziesii woodland. The peninsula features limestone slopes, shoreline vegetation, wetlands, and contains the most inland vegetated knoll of the Spearwood dunes on the Swan-Canning estuary, as well as a significant variety of natural conditions for birds and other fauna.