The Commonwealth Range is a north-south trending range of rugged mountains, 60 nautical miles long, located within the Queen Maud Mountains on the Dufek Coast of the continent of Antarctica. The range borders the eastern side of Beardmore Glacier from Keltie Glacier to the Ross Ice Shelf. The range is southeast of the Queen Alexandra Range, which is to the west of the Beardmore Glacier. It is west of the Hughes Range and north of the Supporters Range and the Barton Mountains.