Social Reformers
- Marian Wright Edelman
- Marion S. Barry
- Martin Luther King Jr
- Martin Robinson Delany
- Mary Astell
- Mary Edwards Walker
- Mary Wollstonecraft
- Matilda Joslyn Gage
- Maurice baron de Hirsch
- Maynard Jackson
- Medgar Evers
- Nat Turner
- Neal Dow
- Ralph David Abernathy
- Ralph Nader
- Randall Robinson
- Rigoberta Menchu
- Robert Dale Owen
- Robert Owen
- Roger Nash Baldwin