The Two Peoples Bay and Mount Manypeaks Important Bird Area is a 261 km2 tract of coastal and subcoastal land east of the city of Albany in south-west Western Australia.
The Important Bird Area (IBA) contains a 50 km length of coastal heathland habitat.
It encompasses the Two Peoples Bay, Mount Manypeaks, Arpenteur and Bald Island Nature Reserves, together with Waychinicup National Park and adjacent unprotected land with suitable habitat.
It has a temperate climate supporting dense shrubland and heathland subject to occasional wildfires.
It also supports over 1% of the world populations of flesh-footed shearwaters and, probably, of great-winged petrels, as well as significant numbers of Carnaby's black cockatoos, Australasian bitterns, western rosellas, red-capped and rock parrots, red-winged fairywrens, western spinebills, western thornbills, white-breasted robins and red-eared firetails.