Mount Blakiston is a mountain in the southwestern corner of Alberta, Canada and the highest point within Waterton Lakes National Park. The mountain is situated in the Clark Range, north of Lineham Creek and south of Blakiston Creek. Blakiston's closest neighbours include Mount Hawkins 2,685 m directly to the west along a connecting ridge and Mount Lineham 2,728 m to the south. The mountain was named in 1858 for Thomas Blakiston, a member of the Palliser Expedition.