Limestone Valley (60°42′S 45°37′W / 60.700°S 45.617°W / -60.700; -45.617) is a valley extending northwest from Cemetery Bay, Signy Island, in the South Orkney Islands. The valley leads directly to Jane Col and serves as a route to the west coast of the island. It was so named by the UK Antarctic Place-Names Committee because of an exposure of limestone in the cliff above the valley.

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