- 4 Mississippi State Building
- 7 Missouri
- 2 Missouri River (river)
- 4 Missouri State Building
- 1 Mitchel, O. M. (Ormsby MacKnight), 1809-1862
- 1 Mitchell Mansion
- 8 Mitchell, Donald G., architect.
- 1 Mitchell, James Iron Foundry
- 1 Mitchell, Joseph-Simpson's Lumber Yrad
- 6 Mitchell, Vance, & Co.
- 1 Mitchell, William (Billy), 1879–1936
- 1 Mitchell, William, 1798-1856
- 8 Miters
- 1 Mittens (handwear)
- 8 Mitton, Thomas, 1812-1878
- 10 Mixed use
- 1 Mizpah Cafe (Firm)
- 1 Mme. Demorest (Firm)
- 1 Moats
- 1 Mobile Bay, Alabama
- 2 Mobiles
- 3 Mock-ups
- 1 Model Coffee House
- 1 Model houses
- 1 Model Houses for Families
- 1 Model railroads
- 1 Model sailboats
- 4 Model ships
- 12 Modeling (forming)
- 1 Models (people)
- 30 Models (representations)
- 2 Modena, Pennsylvania
- 1 Moderation
- 2 Modern (typeface group)
- 1 Modernist
- 2 Modernization
- 1 Modesto Casademunt (Firm)
- 1 Modesty (Sculpture)
- 3 Molasses (syrup)
- 1 Moldova
