F
- (Sitka City and Borough) Fitz Island
- (Yakutat City and Borough) Fitzgerald Island
- (Thomas County) Fivemile Island
- (Perry County) Flapjack Island
- (Madison County) Flat Island
- (Prince of Wales-Hyder Census Area) Flat Island
- (Prince of Wales-Hyder Census Area) Flat Island
- (Sitka City and Borough) Fleming Island
- (Ketchikan Gateway Borough) Fleece Rock
- (Prince of Wales-Hyder Census Area) Flat Island
- (Prince of Wales-Hyder Census Area) Fox Rock
- (Perry County) Foot Island
- (Sitka City and Borough) Flotsam Island
- (Prince of Wales-Hyder Census Area) Flotilla Island
- (Prince of Wales-Hyder Census Area) Fontaine Island
- (Madison County) Foremost Rock
- (Prince of Wales-Hyder Census Area) Forrester Island
- (Prince of Wales-Hyder Census Area) Fort Islet
- (Ketchikan Gateway Borough) Forss Island
- (Thomas County) Found Island
- (Sitka City and Borough) Fragrant Island
- (Perry County) Francis Island
- (Ketchikan Gateway Borough) Fox Island
- (Ketchikan Gateway Borough) Fripo Island
- (Sitka City and Borough) Fritz Island
- (Sitka City and Borough) Fruit Island
- (Sitka City and Borough) Fruit Islands
- (Greene County) Fairmount Island
- (Greene County) Fairs Island
- (Anchorage Municipality) Fairview