Neny Matterhorn is a sharp, pyramid-shaped peak over 1,125 m, standing in the northwest part of the Blackwall Mountains on the south side of Neny Fjord, Graham Land. First roughly surveyed in 1936-37 by the British Graham Land Expedition (BGLE) under Rymill, and resurveyed in 1948-49 by the Falkland Islands Dependencies Survey (FIDS). The name was apparently first used by members of the Ronne Antarctic Research Expedition (RARE), 1947-48, under Ronne, and the FIDS, and derives from its location near Neny Fjord, and its resemblance to the Matterhorn.