Encyclopedias, Almanacs, Transcripts, and Maps
- Residencia
- Resortes, Adalberto Martínez (1916–2003)
- Respect
- RESPELLING
- Response-Dependence Theories
- Responsibility, Moral and Legal
- Reston, James Barrett ("Scotty")
- Restrepo, Carlos Eugenio (1867–1947)
- Restrepo, José Manuel (1781–1863)
- RESTRICTED LANGUAGE
- Retablos and Ex-Votos
- Retirante
- Reunions
- Reuther, Victor George
- Revelle, Roger Randall Dougan
- Reverón, Armando (1889–1954)
- Reverse Mathematics
- Revillagigedo, Conde de (1740–1799)
- Revolt of 1832
- Revoltosos