Ru
- .ru
- AirBridge Cargo
- Confucianism
- French language
- Italian language
- Rack unit
- Radboud University Nijmegen
- Radford University
- Rai University
- Rajasthan University
- Rajshahi University
- Rama University
- Ramkhamhaeng University
- Recognized Component Mark
- Regis University
- Regno Unito
- Reino Unido
- Renigunta Junction railway station
- Resource Unit
- Rew (disambiguation)
- Rewe (disambiguation)
- Reykjavík University
- Rhodes University
- Rockefeller University
- Rockhurst University
- Roo (disambiguation)
- Roosevelt University
- Rou (disambiguation)
- Rowan University
- Royaume-Uni
- Ru (cuneiform)
- Ru (film)
- Ru (kana)
- Ru (novel)
- Ru (surname)
- Ru River
- Ru ware
- RuPaul
- Ruanda-Urundi
- Rue (disambiguation)
- Rugby union
- Ruse University
- Russia
- Russian language
- Rutgers University
- Ruthenium
- Ruu
- Ryerson University
- Rückkehr unerwünscht
- Spanish language