- Lee, R. E. (Rudolph Edward), 1874-19596
- Lever Hall (Clemson, S.C.)1
- Library Bridge (Clemson, S. C.)4
- Library buildings6
- Lost architecture58
- Lowry Hall (Clemson, S.C.)1
- Lyles, William G. (William Gordon), 1913-19812
- Machine shops1
- Main Building (Clemson, S.C.)6
- Manis, James1
- Maps88
- Martin, Samuel Maner, 1875-19591
- Mascots1
- Mayer, Edward, 1942-1
- McConnell, Vivian H., 1918-20041
- McCulloch, Dorothy, 1938-1
- Mechanical Hall (Clemson, S.C.)2
- Mellette, Morgan1
- Military cadets6
- Military education3