Encyclopedias, Almanacs, Transcripts, and Maps
- Randolph-Macon College
- Randolph-Macon Woman's College
- Rangabe, Alexandros Rizos
- Rankine temperature scale
- Rankovi?, Aleksandar
- Rann of Kachchh
- Rannoch, Loch
- Rantekombola
- Rantoul
- Raoult's law
- Rapa Nui
- Rapallo
- Rape and Sexual Harassment Around the World
- Rapoport, Solomon Seinwil
- Rapperswil
- Raqqa
- rare gas
- Ras Addar
- Ras al-Khaimah
- Ras at Tib