Shapeless Mountain () is a massive mountain, 2,740 m, standing west of the head of Balham Valley in Victoria Land in Antarctica. Named in 1957 by the New Zealand Northern Survey Party of the Commonwealth Trans-Antarctic Expedition (1956–58) as being descriptive of its appearance from almost every direction.
This article incorporates public domain material from the United States Geological Survey document "Shapeless Mountain" (content from the Geographic Names Information System).