The MacIntyre Mountains or MacIntyre Range is a range of mountains in the High Peaks region of the Adirondacks, due west of Mount Marcy, in northeastern New York State. The range runs from southwest to northeast. Its sheer southwest slope makes up one side of Indian Pass, and a northeastern spur forms the cliffs of Avalanche Pass.
The range includes Iroquois, Mount Marshall, Wright and Algonquin, the second highest peak in the state. Despite being spelled differently, it is named for the founder of the McIntyre Iron Works at Tahawus, New York, Archibald McIntyre.