Nancy Rock (62°13′01″S 59°06′04″W / 62.21692°S 59.10119°W / -62.21692; -59.10119) is a rock lying 2 nautical miles (3.7 km) west of Flat Top Peninsula, King George Island, in the South Shetland Islands. Named by the United Kingdom Antarctic Place-Names Committee (UK-APC) in 1961 after the American sealing vessel Nancy (Captain Benjamin Upton) from Salem, MA, which visited the South Shetland Islands in 1820–22.

 This article incorporates public domain material from "Nancy Rock". Geographic Names Information System. United States Geological Survey.