- Maclean, Charles, active 1788-18241
- Maclean, Lachlan, -18201
- Macmichael, William, 1784-18391
- Macnish, Robert, 1802-18373
- Macnish, Robert, 1802-1837, author1
- Macrery, Joseph.1
- Macrobin, John, 1804-18791
- Madison, James C.1
- Magdalen Society (Philadelphia, Pa.).2
- Magendie, François, 1783-18558
- Magill, Alfred T. (Alfred Thruston), 1804-18374
- Maia, Emilio Joaquim da Silva, 1808-18592
- Mais, Charles.2
- Malin, W. G. (William Gunn)1
- Manec, P. J. (Pierre Joseph), 1799-18841
- Manesca, John, approximately 1780-18381
- Manley, James R., 1781-18517
- Mann, Daniel, 1811-18921
- Mann, Edwin John, 1812-1
- Mann, James, 1759-18322