RN

RN or Rn may stand for:

Businesses and organizations

• Air Horizons, a former airline (IATA code RN)
• Radio National, Australia
• Renovación Nacional or National Renewal (Chile), a Chilean political party
• Resistencia Nacional, an El Salvador political party
  • Fuerzas Armadas de la Resistencia Nacional, military arm of the party
• Royal Navy, UK
• Ruch Narodowy, a Polish far-right political party

Places

• Province of Rimini, Italy (ISO 3166-2:IT code)
• Rio Grande do Norte, Brazilian state (ISO 3166-2:BR code RN)
• County Roscommon, Ireland (code)

Science, technology, and mathematics

• rn (newsreader), a Usenet news client
• Radon (symbol Rn), a chemical element
• Registered nurse, a licensed healthcare provider
• Round nose, a type of bullet
• Euclidean space with n dimensions, denoted by ${\textbf {R}}^{n}$ or $\mathbb {R} ^{n}$
• Newline, represented as \r\n in certain operating systems

Other uses

• RN: the Memoirs of Richard Nixon, an autobiographical book
• Registered Identification Number, a US FTC code used on clothing labels
• "Right now", in shorthand
• Roman Numerals