Calles de San Carlos de Bariloche
- Maca Plateado
- Madre Teresa
- Mahuida
- Maipu
- Maitenes 998–999
- Malharo
- Malvina Soledad 4798–4799
- Managua 698–699
- Mandisovi
- Maniu 7600–7699
- Manuel Alberti 600–699
- Manuel Gomez Carrillo 100–599
- Mapuches 6298–6299
- Maqui
- Maquinchao
- Mar del Plata 200–299
- Mara
- Mari Ailla 700–899
- Mari o Calle 10 11830–12399
- Maria Ayelen
- Maria Elena Walsh
- Maria Eugenia o Ex Guevara
- Maria Jose
- Maria Paola
- Mariano Castex 1598–1599
- Mariano Moreno 5898–5899
- Mariano Mores
- Marta de los Rios
- Marta Linch 498–499
- Martin Fierro 1500–1599
- Martin Garcia
- Martin Pescador
- Martineta
- Mary Quechu 500–999
- Mary Quila 500–999
- Mary Quine 500–699
- Mary Quine o Calle 11 700–999
- Mary Regle 700–999
- Medallita
- Medioevo
- Meli 11400–12199
- Mendoza 200–299
- Mercedes Sosa 200–299
- Mexico 1–699
- Miami
- Michay 1–899
- Milano Blanco
- Miramar Norte
- Miramar Sur
- Misiones 398–399
- Misto 1–299
- Modesta Victoria
- Molle 698–699
- Mons Angeleli 6900–7599
- Mons Jose Fagnano 300–1599
- Mons Nicolas Esandi 1699–1798
- Monte Moro
- Montevideo 400–699
- Moro
- Mosqueta 100–199
- Motonave Huilqui
- Motta
- Mtro Adolfo Alsina