Mount Colonel Foster is a mountain located on Vancouver Island in Strathcona Regional District, British Columbia, Canada.

It was during the 1912 Alpine Club of Canada ascent of Elkhorn Mountain, which was led by Edward Wheeler, that a jagged peak at the head of the Elk River Valley was noticed and named after Foster.

Notable climbs include the first ascent of the East Face by Dick Culbert, Paul Starr and Fred Douglas over the Labour Day weekend 1972, the first solo ascent of the East Face by Joe Bajan in August 1974 when he climbed the Grand Central Couloir and the first winter ascent of the East Face was by Joe Bajan and Ross Nichol in January 1979 when they climbed the Directtisma Route.

In January 1985 Doug Scott, Greg Child and Rob Wood made the second winter ascent of the East Face via Bajan's Grand Central Couloir.

[citation needed] Access is via the Elk River Hiking Trail 12 kilometres (7.5 mi) to Landslide Lake.