Flat Top Peninsula is a small, flat-topped peninsula 2 km (1 mi) north of the south-western extremity of King George Island in the South Shetland Islands of Antarctica. The peninsula was named on a chart based upon a survey by Discovery Investigations personnel of the Discovery II during 1935.

 This article incorporates public domain material from "Flat Top Peninsula". Geographic Names Information System. United States Geological Survey.

62°12′32″S 59°01′33″W / 62.20892°S 59.02597°W / -62.20892; -59.02597