Ru, ru, or RU may refer to:

Russia

  • Russia (ISO 3166-1 alpha-2 country code)
  • Russian language (ISO 639 alpha-2 code)
  • .ru, the Internet country code top-level domain for Russia

China

  • Rù (入), the entering tone in Chinese language phonetics
  • Rú (儒), a Chinese language term for Confucianism
  • Ru (surname) (茹), a Chinese surname
  • Ru River (汝), in Henan, China
  • Ru ware, a type of Chinese pottery
  • Ru (upper garment) (襦)

Educational institutions

  • Rajasthan University in Rajasthan, India
  • Radboud University Nijmegen, in Nijmegen, Netherlands
  • Radford University, in Virginia, USA
  • Rai University in Gujarat, India
  • Rajshahi University in Bangladesh
  • Rama University in India
  • Ramkhamhaeng University in Thailand
  • Rangoon University in Burma
  • Regis University in Colorado, USA
  • Reykjavík University Iceland
  • Rhodes University in Grahamstown, South Africa
  • Rockefeller University in New York, USA
  • Rockhurst University in Missouri, USA
  • Roosevelt University in Chicago, Illinois, USA
  • Rowan University in New Jersey, USA
  • Ruse University in Bulgaria
  • Rutgers University in New Jersey, USA
  • Ryerson University, the former name of Toronto Metropolitan University in Ontario, Canada

Science and technology

  • Resource Unit, a unit used in 802.11 wireless
  • Rack unit, a measurement of the height of electronic equipment commonly installed in 19-inch racks
  • Ruthenium, symbol Ru, a chemical element
  • The "backwards-R U" Recognized Component Mark of Underwriters Laboratories

Transport

  • AirBridge Cargo (IATA airline code)
  • Renigunta Junction railway station (Indian Railways station code)

Other uses

  • Ru (kana), the romanisation of the Japanese kana る and ル
  • Ru (cuneiform), a sign in cuneiform writing
  • Ru (novel), a novel by Canadian novelist Kim Thúy
  • Ru (film), a film by Canadian director Charles-Olivier Michaud based on Kim Thúy's novel
  • Ruanda-Urundi, former German and Belgian colony (today Rwanda and Burundi)
  • Rückkehr unerwünscht "return unwanted", a Nazi designation for concentration camp prisoners who were forbidden to be released
  • RuPaul, an American drag queen, actor, and television personality
  • Rugby union

See also

  • Rew (disambiguation)
  • Rewe (disambiguation)
  • Roo (disambiguation)
  • Rou (disambiguation)
  • Rue (disambiguation)
  • Ruu