King Peak is a rock peak, high, surmounting the eastern extremity of the Bermel Escarpment, west-northwest of Mount Powell, in the eastern part of the Thiel Mountains of Antarctica. The name was proposed by Peter Bermel and Arthur B. Ford, co-leaders of the United States Geological Survey (USGS) Thiel Mountains party which surveyed these mountains in 1960-61. It was named for Clarence King, the first director of the USGS, 1879-81. Other peaks in the vicinity are named for subsequent directors of the USGS.