| Ridley Island | |
| Map: | Antarctica |
| Location: | Antarctica |
| Coordinates: | -61.85°N -61°W |
| Population: | Uninhabited |
| Country: | None |
| Treaty System: | Antarctic Treaty System |
Ridley Island is an island lying 2nmi 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.