Rogozen Island is a conspicuous island off the northwest coast of Robert Island, South Shetland Islands situated 920 m north-northeast of Cornwall Island, 470 m south-southwest of Heywood Island, and 1.74 km northwest of Svetulka Island in the Onogur group. Extending 760 m in east-west direction and 260 m wide. Surface area 16 ha. Bulgarian early mapping in 2009. Named after the settlement of Rogozen in northwestern Bulgaria in connection with the Rogozen Thracian treasure.