Mount Thor, officially gazetted as Thor Peak, is a mountain with an elevation of 1675m located in Auyuittuq National Park, on Baffin Island, Nunavut, Canada. The mountain is located 46km northeast of Pangnirtung and features Earth's greatest vertical drop of 1250m, with the cliff overhanging at an average angle of 15 degrees from vertical. Despite its remoteness, this feature makes the mountain a popular rock climbing site. Camping is allowed, with the only official site being at the entrance to the Akshayuk Valley near Overlord Peak.
The mountain was named for Thor, the Norse thunder god.