RN

RN or Rn may refer to:

Places

• 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

• National Rally (Rassemblement national), a French political party, formerly known as National Front
• Resistencia Nacional, an El Salvador political party
• Renovación Nacional or National Renewal, a Chilean political party
• 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

Science and technology

• 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 ${\displaystyle {\textbf {R}}^{n}}$ or ${\displaystyle \mathbb {R} ^{n}}$
• Round nose, a type of bullet

Other

• 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
• Air Horizons, a former airline (IATA code RN)
• Kirundi language (ISO 639-1)
• Right Now, online / social media slang