Schulthess Buttress is a broad ice-capped bluff between Ricker and Higgins Canyons on the north side of Buckeye Table, Ohio Range. The feature has steep ice and rock cliffs and is prominent when viewed from northward. Surveyed in December 1958 by the United States Antarctic Research Program (USARP) Horlick Mountains Traverse party. Named by Advisory Committee on Antarctic Names (US-ACAN) for Emil Schulthess, Swiss photographer who accompanied the party during part of the traverse.