Encyclopedias, Almanacs, Transcripts, and Maps
- Riksdag
- Riley, Charles Valentine
- Rimac
- Rimouski
- Rimsky-Korsakov, Nicolai Andreyevich
- ring compound
- ringbone
- ringhals
- Ringling Brothers
- Ringsted
- ringtail monkey
- Rinns of Galloway
- Río
- Rio Branco, José Maria da Silva Paranhos, barão do
- Río Cuarto
- Río de Oro
- Río Grande del Norte National Monument
- Rio Grande do Norte
- Río Muni
- Río Piedras