Mount Grieg is a snow-covered mountain, rising to about 800 metres (2,600 ft), with a rock-exposed west face, overlooking the southeast part of Brahms Inlet and is situated on the base of the Derocher Peninsula, on the north side of the Beethoven Peninsula in the southwest part of Alexander Island, Antarctica. A number of mountains in this vicinity first appear on maps by the Ronne Antarctic Research Expedition (RARE), 1947–48. This mountain, apparently one of these, was mapped from RARE air photos by D.