L
- Liberty
- (Nome Census Area) Lost River
- (Aleutians West Census Area) Little Sitkin Island
- (Aleutians West Census Area) Little Kiska Island
- (Aleutians West Census Area) Loaf Island
- (Aleutians West Census Area) Lotus Island
- (Prince of Wales-Hyder Census Area) Labouchere Bay
- (Prince of Wales-Hyder Census Area) Labouchere Island
- (Prince of Wales-Hyder Census Area) Lacey Island
- (Prince of Wales-Hyder Census Area) Ladrones Islands
- (Perry County) Lagoon Island
- (Prince of Wales-Hyder Census Area) Lambda Rock
- (Ketchikan Gateway Borough) Lane Island
- (Perry County) Lars Island
- (Prince of Wales-Hyder Census Area) Larzatita Island
- (Sitka City and Borough) Lauf Islands
- (Sitka City and Borough) Lava Island
- (Perry County) Ledge Island
- (Sitka City and Borough) Legma Island
- (Haines Borough) Lehunua Island
- (Perry County) Leland Islands
- (Perry County) Lemesurier Island
- (Juneau City and Borough) Lena Beach
- (Juneau City and Borough) Lemon Creek
- (Sitka City and Borough) Leo Island
- (Perry County) Lester Island
- (Madison County) Level Islands
- (Prince of Wales-Hyder Census Area) Lewis Island
- (Perry County) Libby Island
- (Sitka City and Borough) Liesnoi Island