R
- (Aleutians West Census Area) Islas Rata
- (Prince of Wales-Hyder Census Area) Rookery Islands
- (Perry County) Rabbit Island
- (Sitka City and Borough) Rachek Island
- (Perry County) Rainier Island
- (Sitka City and Borough) Rakof Islands
- (Juneau City and Borough) Ralston Island
- (Sitka City and Borough) Ramp Island
- (Prince of Wales-Hyder Census Area) Rancheria Island
- (Sitka City and Borough) Rapids Island
- (Sitka City and Borough) Rashimosti Island
- (Prince of Wales-Hyder Census Area) Raso Rock
- (Perry County) Rat Island
- (Thomas County) Range Island
- (Ketchikan Gateway Borough) Raven Island
- (Madison County) Read Island
- (Perry County) Redcliff Islands
- (Prince of Wales-Hyder Census Area) Red Rock
- (Sitka City and Borough) Redfish Islets
- (Prince of Wales-Hyder Census Area) Reef Island
- (Ketchikan Gateway Borough) Reef Island
- (Prince of Wales-Hyder Census Area) Reef Islands
- (Sitka City and Borough) Reef Rock
- (Ketchikan Gateway Borough) Refuge Cove
- (Sitka City and Borough) Reshimosti Island
- (Ketchikan Gateway Borough) Isla de Revillagigedo
- (Prince of Wales-Hyder Census Area) Rhea Rocks
- (Prince of Wales-Hyder Census Area) Ridge Island
- (Sitka City and Borough) Ring Island
- (Sitka City and Borough) Road Island