Seward Mountain is a mountain in the Seward Range of the Adirondacks in the U.S. state of New York. It is the 24th-highest of the Adirondack High Peaks, with an elevation of . The mountain is located in the town of Harrietstown in Franklin County. It is named for New York governor William Seward.
The mountain had the Mohawk name Ou-kor-lah, translated into English as "Great Eye", for a white spot on its side when viewed from Long Lake. The name Mount Seward was first used in print in a 1841 report to the New York State Legislature prepared by state geologist Ebenezer Emmons. The first recorded ascent of the mountain was made by surveyor Verplanck Colvin accompanied by mountain guides Alvah Dunning and Mitchell Sabattis on October 15, 1870.
The summit of Seward can be accessed on unmarked trails. The easiest access to the Seward Range is on the Ward Brook Truck Trail, which begins at a parking lot on Coreys Road south of the village of Saranac Lake. Between an intersection with a horse trail from the trailhead and the Ward Brook lean-to located from the trailhead, the trail crosses three brooks; the preferred route to Seward Mountain branches off from the trail at the first of these. An alternative route to the Seward Range follows the Calkins Brook Track Trail. This trail begins at the same parking lot and coincides with the Truck Trail for before diverging to the right. The unmarked trail to the Seward Range branches off of the Calkins Brook Trail at . Another unmarked trail connects the summits of Seward Mountain, Donaldson Mountain, and Mount Emmons.