Mount Tilley () is a flat-topped, ice-capped mountain, 1,900 m, 7 nautical miles (13 km) south of Mount Tyrrell and 3 nautical miles (6 km) inland from George VI Sound in the east part of Alexander Island. Despite its height, it is best described as a foothill of the Douglas Range, from which it is separated by Toynbee Glacier. First photographed from the air in 1936 by the British Graham Land Expedition (BGLE). Surveyed in 1948 by the Falkland Islands Dependencies Survey (FIDS) and named by them for Cecil E. Tilley, professor of mineralogy and petrology at Cambridge University.
This article incorporates public domain material from the United States Geological Survey document "Mount Tilley" (content from the Geographic Names Information System).