Mount Ratz, Mountain summit in British Columbia, Canada

Mount Ratz is a summit in the Stikine Icecap region of the Coast Mountains near the British Columbia-Alaska border. The peak rises from a landscape shaped by glaciers and rocky alpine terrain.

Mount Ratz honours William Francis Ratz, the Dominion Land Surveyor in charge of surveying the Taku, Whiting and Stikine rivers, who died in Ottawa on 6 February 1909 aged 25. Fred Beckey and Daniel Davis made the first ascent on 2 August 1964, climbing the east face and northeast pillar.

The peak's name honours William F. Ratz, an engineer of the International Boundary Survey who died in Ottawa on 6 February 1909, aged 25, after mapping the Taku, Whiting and Stikine rivers. The first ascent, by Fred Beckey and Daniel Davis on 2 August 1964, followed the east face and northeast pillar.

Mount Ratz lies about 5 km east of the Alaska border and 75 km northeast of Petersburg, Alaska, in the Stikine Icecap. Approach routes cross glaciers fed by the Triumph, Baird and Dawes icefields, so parties need glacier travel and crevasse-rescue skills. The first ascent, by Fred Beckey and Daniel Davis on 2 August 1964, went up the east wall and northeast pillar.

The peak stands at a considerable distance from other summits of similar elevation, making it one of North America's most isolated major mountains. This remoteness makes it a sought-after objective for mountaineers pursuing expeditions in rarely visited terrain.