M
- Guglielmo Marconi, radio pioneer (1975)
- José Manuel Marroquín (1904)
- José Martí, Cuban patriot (1955)
- José Francisco de San Martín (1955)
- Pompilio Martínez (1952)
- Manuel Mejía J. (1965)
- Santo Michelena (1957)
- Laura Montoya (1974)
- Tomás Cipriano de Mosquera (1978)
- José Celestino Mutis (1947)
Read more about this topic: List Of People On Stamps Of Colombia