Gap Mountain is a mountain summit located at the southern end of the Opal Range in the Canadian Rockies of Alberta, Canada. Its nearest higher peak is Elpoca Mountain, to the east. Gap Mountain is situated 5.0 km south of Mount Wintour, within Peter Lougheed Provincial Park. Gap Mountain is a conspicuous peak seen from Alberta Highway 40 at Highwood Pass. It is a popular climbing destination because it offers interesting, exposed scrambling on its eastern flanks with excellent summit views of Kananaskis Country.