Place
- Marshfield Township1
- Martinsburg Township1
- Maryland--Harford County1
- Maryland--Montgomery County1
- Maryland--Prince George's County1
- Massachusetts--Medford1
- Mazeppa1
- Mazeppa Township1
- McKenzie River1
- McLeod County, Minnesota1
- Meeker County, Minnesota1
- Melville Township1
- Mesa Verde National Park1
- Metz1
- Mexico--Tabasco1
- Michigan--Ann Arbor1
- Michigan--Delta County1
- Michigan--Eaton County1
- Michigan--Genesee County1
- Michigan--Gladwin County1