Mackay Mountains () is a prominent group of peaks 16 kilometres (10 mi) south of the Allegheny Mountains in the Ford Ranges, Marie Byrd Land. They were discovered by the Byrd Antarctic Expedition in 1934, and named for Clarence Mackay of the Postal Telegraph and Mackay Radio Companies, who was a benefactor of the expedition.[1]
This article incorporates public domain material from the United States Geological Survey document "Mackay Mountains" (content from the Geographic Names Information System).