RN or Rn may refer to:
Places[edit]
- Rio Grande do Norte, Brazilian state (ISO 3166-2:BR code RN)
- Province of Rimini, Italy (ISO 3166-2:IT code)
- County Roscommon, Ireland (code)
Politics[edit]
- National Rally (France) (Rassemblement national), a far-right French political party
- Resistencia Nacional, a revolutionary socialist party in El Salvador
- Renovación Nacional or National Renewal (Chile), a liberal conservative party in Chile
- Ruch Narodowy, a Polish far-right political party
- Fuerzas Armadas de la Resistencia Nacional, was the military arm of the National Resistance, a Salvadoran communist organization
- Resistencia Nicaragüense, Nicaraguan Contra rebels
Science and technology[edit]
- Radon, symbol Rn, a chemical element
- rn (newsreader), a Usenet news client
- Newline, represented as \r\n in certain operating systems
- Euclidean space, with n dimensions, denoted by or
- Round nose, a type of bullet
- Recurrent nova, a class of repeating cataclysmic variable stars
Other[edit]
- Royal Navy, UK
- Radio National, Australia
- Registered nurse, a licensed health care provider
- RN: the Memoirs of Richard Nixon, an autobiography
- Registered Identification Number, a US FTC code used on clothing labels
- RN, then IATA code of Air Horizons, a former French airline
- RN, then IATA code of Rayani Air, a former Malaysian airline
- Kirundi language (ISO 639-1: RN)