M
- Meade River
- Minchumina Lake
- Mitrofania
- Meshik
- McCord
- McDougal
- McCallum
- Mansfield
- Miller House
- Montana Creek Camp
- Minto, Yukon-Koyukuk
- Minto
- (Miller County) Middle Island
- (Lake and Peninsula Borough) Mum's Island
- (Aleutians West Census Area) Mex Island
- (Aleutians West Census Area) Middle Rocks
- (Juneau City and Borough) Mab Island
- (Prince of Wales-Hyder Census Area) Mabel Island
- (Thomas County) Mabel Island
- (Prince of Wales-Hyder Census Area) Madre de Dios Island
- (Sitka City and Borough) Magoun Islands
- (Sitka City and Borough) Maid Island
- (Sitka City and Borough) Makhnati Island
- (Sitka City and Borough) Makhnati Islands
- (Prince of Wales-Hyder Census Area) Mabel Island
- (Prince of Wales-Hyder Census Area) Marabilla Island
- (Ketchikan Gateway Borough) Manzanita Island
- (Prince of Wales-Hyder Census Area) Marble Island
- (Madison County) Marble Islet
- (Perry County) Marble Islands