Mount Stephenson a mountain in Antarctica. It is located within the central portion of the Douglas Range, standing at the heads of Toynbee Glacier and Sedgwick Glacier 8 miles west of George VI Sound, near the east coast of Alexander Island within the British Antarctic Territory. At an elevation of , Mount Stephenson is the highest mountain in the Douglas Range and the highest point on Alexander Island. Mount Egbert ranks second, standing at 2,895 m and lies south-southeast of Mount Stephenson.