The Port Royal Cays are a small group of uninhabited islands or cays off Port Royal, Jamaica, located at 17°55′06.36″N 76°49′11.96″W and arranged in the shape of an atoll with a diameter between 4 and 5 km, and a total area of 12 km2. The land area is about 0.03 km2. There are eight named cays, including South Cay Rock which is sometimes subsumed with South Cay.