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. The Lineham Creek hiking trail passes along the foot of the southern slopes of the mountain and for capable scramblers, Blakiston's rubbly but steep southern slopes provide a suitable line of ascent.
Blakiston's closest neighbours include Mount Hawkins 2685m directly to the west along a connecting ridge and Mount Lineham 2728m to the south.
The mountain was named in 1858 for Thomas Blakiston, a member of the Palliser Expedition.