The Byrd Glacier (80°20′S, 159°00′E) is a major glacier, about 136 km long and 24 km wide, draining an extensive area of the polar plateau and flowing eastward between the Britannia Range and Churchill Mountains to discharge into the Ross Ice Shelf at Barne Inlet.
Named by the NZ-APC after Rear Admiral Byrd, US Navy, American Antarctic explorer.