Place
- Mantua, Gloucester Co.1
- Medfield, Norfolk Co1
- Mindoro1
- Mine la Motte, Madison County, below buff1
- Mississippi1
- Montevallo1
- Mt. Dora1
- Mt. Tom, Woodstock1
- Nagasaki1
- Nanzenji1
- Near Texarkana1
- New Brunswick1
- New Russia1
- Niepolomice, distr. Cracovia1
- North Pomfret1
- Northern1
- Northfield1
- Nova Scotia1
- Ocean Springs1
- Papua New Guinea1