Horror Rock () is a rock lying 3.5 nautical miles (6 km) west of South West Point, Annenkov Island, South Georgia. Named by United Kingdom Antarctic Place-Names Committee (UK-APC) from the circumstances of the rock's discovery by HMS Owen on February 21, 1961. The ship avoided striking the rock in rough weather and low visibility, passing within 1 mile of heavy breakers.
This article incorporates public domain material from the United States Geological Survey document "Horror Rock" (content from the Geographic Names Information System).