L
- (Campbell County) Let Island
- (Campbell County) Lida Island
- (Kodiak Island Borough) Lighthouse Rocks
- (Denali Borough) Lignite
- (Anchorage Municipality) Lindale
- (Yukon-Koyukuk Census Area) Liner Island
- (Anchorage Municipality) Lingo
- (Aleutians West Census Area) Lion Rock
- (Sumter County) Little Axel Lind Island
- (Kodiak Island Borough) Little Bear Rock
- (Campbell County) Little Egg Island
- (Yukon-Koyukuk Census Area) Little Eightmile Island
- (Sumter County) Little Fairmount Island
- (Kodiak Island Borough) Little Fork Island
- (Kodiak Island Borough) Little Fort Island
- (Campbell County) Little Goose Island
- (Sumter County) Little Green Island
- (Yukon-Koyukuk Census Area) Little Joker Island
- (Campbell County) Little Koniuji Island
- (Sumter County) Little Mummy Island
- (Kodiak Island Borough) Little Raspberry Island
- (Greene County) Little Smith Island
- (Aleutians West Census Area) Little Tanaga Island
- (Sumter County) Lone Island
- (Aleutians West Census Area) Lone Rock
- (Kenai Peninsula Borough) Lone Rock
- (Lake and Peninsula Borough) Lone Rock
- (Campbell County) Long Island
- (Kenai Peninsula Borough) Long Island
- (Kodiak Island Borough) Long Island