The Daniels Range is a principal mountain range of the Usarp Mountains, about 80 km (50 mi) long and 16 km (10 mi) wide, bounded to the north by Harlin Glacier and to the south by Gressitt Glacier. The range was mapped by USGS from surveys and U.S. Navy air photos, 1960-63. Named by US-ACAN after Ambassador Paul C. Daniels (1903–86), a leading American figure in the formulation of the Antarctic Treaty in 1959.