Encyclopedias, Almanacs, Transcripts, and Maps
- REDUPLICATION
- Reed, Walter (1851–1902)
- Reed, Willis, Jr.
- Reese, Harold Henry ("Pee Wee")
- Reeve, Henry M. (1850–1876)
- Refah Partisi
- REFERENT
- Reflective Equilibrium
- REFLEXIVE PRONOUN
- Reforma Agraria, Revolution
- Reformation
- Refugees in South Asia
- Refugees: Afghan
- Refugees: Balkan Muslim
- Refugees: Jewish
- Refugees: Kurdish
- Refugees: Palestinian
- Regalado, Tomás (1861–1906)
- Regan, Donald Thomas
- Regeneración