- Mathews, Jay, 1945-1
- Mauro, Tony1
- McCain, John C. (John Charles), 1939-1
- Merritt, T. Allen, 1946-1
- Michel, Robert H., 1923-20171
- Miller, Joyce D. (Joyce Dannen), 1928-20121
- Montgomery, Rick, 1960-1
- Morella, Constance A., 1931-1
- Murkowski, Frank H.1
- Muscular Dystrophy Association1
- National Academy of Social Insurance (U.S.)1
- National Center for Medical Rehabilitation Research (U.S.)1
- National Center on Child Abuse and Neglect (U.S.)1
- National Commission on Childhood Disability (U.S.)1
- National Council on the Aging1
- National Disability Council (Great Britain)1
- National Handicapped Sports & Recreation Association (U.S.)1
- National Republican Congressional Committee1
- Peña, Federico1
- Pitts, Lewis, 1947-1
