Mount Loudon is a mountain summit located in the North Saskatchewan River valley of Alberta, Canada. Mount Loudon is situated in the Siffleur Wilderness Area of the Canadian Rockies. Its nearest higher peak is Mount Murchison, to the west. Siffleur Mountain is located immediately northeast, and Mount Peskett immediately north. Mount Loudon can be seen from Highway 11, the David Thompson Highway. Precipitation runoff from the mountain flows north via Loudon Creek and Porcupine Creek, which are both tributaries of the North Saskatchewan River.