Ridley Island is an island lying 3.7 kilometres (2 nmi) north of False Round Point, King George Island, in the South Shetland Islands. This island was known to both American and British sealers as early as 1822, and the name Ridley is well established in international usage.

• List of Antarctic and sub-Antarctic islands

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