- Martin, Samuel Maner, 1875-19591
- Mauldin Hall (Clemson, S.C.)1
- Mechanical Hall (Clemson, S.C.)11
- Mess Hall (Barracks No. 1 (Clemson, S.C.))38
- Military cadets10
- Military education9
- Moorman House (Clemson, S.C.)1
- Morrison House (Clemson, S.C.)1
- Motels7
- Mural painting and decoration, American1
- National Association of Rotary Clubs of America1
- Olin Hall (Clemson, S.C.)1
- Petroff, Gilmer, 1913-19901
- Poole, Robert F. (Robert Franklin), 1893-19582
- Post office stations and branches5
- Power House (Clemson, S.C.)9
- Prefabricated houses7
- Prefabs (Clemson, S.C.)7
- Print Shop (Clemson, S.C.)3
- Printing plants2