Encyclopedias, Almanacs, Transcripts, and Maps
- Raymond IV (count of Toulouse)
- Raymond VI (count of Toulouse)
- Raymond VII (count of Toulouse)
- Raytown
- Razak, Abdul
- reactance
- reaction rate
- reactive power
- Read, George
- Reading, University of
- Reagan, John Henninger
- Reaiah
- real number
- real property
- reapportionment
- Réaumur temperature scale
- Réaumur, René Antoine Ferchault de
- Reba
- Rebekah
- Récamier, Juliette