The mountain was named by J. Norman Collie in 1902 for George Marsten Weed (1864-1948) of the Appalachian Mountain Club, who climbed in the Rockies and made several first ascents. Collie and Weed were together in a party which made the first ascent of Mount Forbes on August 10, 1902. The mountain's name was officially adopted in 1928 by the Geographical Names Board of Canada.