McArthur Peak is a peak in the Saint Elias Mountains of Yukon, Canada. The peak, 13th highest in Canada, sits 11 km NE of Mount Logan, the highest mountain in Canada. A secondary peak two kilometres to the east is known as McArthur East. The peak was named for James Joseph McArthur, a Dominion Land Surveyor who also made the first ascent of a Canadian peak over 10,000 ft — Mount Stephen in 1887.