The Challenger Mountains are a mountain range on Ellesmere Island in Nunavut, Canada. The range is the most northern range in the world and of the Arctic Cordillera. The highest mountain in the range is Commonwealth Mountain 2,225 m (7,300 ft). The United States Range is immediately to the east of the Challenger Mountains.
The range lies within Quttinirpaaq National Park which is one of the two most northerly park on Earth with Northeast Greenland National Park in Greenland.
Low elevation lakes located along Taconite Inlet are part of the Challenger Mountains and local relief exceeds 1,250 m (4,101 ft).
- ^ The Challenger Mountains at the Atlas of Canada