- Mallard Island
- Maltby
- Maltha
- Mammoth
- Mammoth Lakes
- Manchester
- Mandeville Island
- Manhattan Beach
- Manila
- Manix
- Mankas Corner
- Manlove
- Manteca
- Manteca Junction
- Manton
- Manuel Mill
- Manzana
- Manzanar
- Manzanita
- Manzanita
- Manzanita Lake
- Maple Creek
- Maple Grove
- Marble Place
- Marcel
- March Air Force Base
- March Field
- March Rock
- Marchant
- Marconi