Donaldson Mountain is a mountain located in Franklin County, New York, named in 1924 after Alfred Lee Donaldson (1866–1923), author of A History of the Adirondacks. The mountain is part of the Seward Mountains of the Adirondacks. Donaldson Mtn. is flanked to the northeast by Seward Mountain, and to the south by Mount Emmons.

Donaldson Mountain
Donaldson Mountain (Right) and Mount Emmons (Left) seen from Seward Mt.
Highest point
Elevation	4,108 ft (1,252 m) NGVD 29[1]
Prominence	138 ft (42 m)[1]
Listing	Adirondack High Peaks 33rd
Coordinates	44°09′14″N 74°12′40″W / 44.1539471°N 74.2109910°W / 44.1539471; -74.2109910[2]
Geography
Donaldson Mountain Location of Donaldson Mountain within New York Show map of New York Adirondack Park Donaldson Mountain Donaldson Mountain (the United States) Show map of the United States
Location	Franklin County, New York
Parent range	Seward Mountains
Topo map	USGS Ampersand Lake

Donaldson Mountain stands within the watershed of the Raquette River, which drains into the Saint Lawrence River in Canada, and into the Gulf of Saint Lawrence. The southeast side of Donaldson Mt. drains into Seward Brook, thence into the Cold River, a tributary of the Raquette River. The southwest end of Donaldson Mt. drains into Boulder Brook, thence into the Cold River. The northwest side of Donaldson drains into Calkins Brook, thence into the Raquette River.

Donaldson Mountain is within the High Peaks Wilderness Area of Adirondack State Park.