RN

RN or Rn may refer to:

Places

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 Resistance Party, founded by Contra rebels
The initials of the 37th U.S. president, Richard Nixon (1913-1994, served 1969-1974); his initials were also the title of his book of memoirs, published in 1978 (RN: The Memoirs of Richard Nixon)

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 ${\textbf {R}}^{n}$ or $\mathbb {R} ^{n}$
Round nose, a type of bullet
Recurrent nova, a class of repeating cataclysmic variable stars

Abbreviation of "right now"
Royal Navy, military branch on the seas and air of the United Kingdom, plus other "Royal Navy" armed forces of Commonwealth of Nations such as the Dominion of Canada and the Commonwealth of Australia
Radio National, Australia
Registered nurse, a licensed health care provider
RN: the Memoirs of Richard Nixon, an autobiography of 37th U.S. President Richard M. Nixon. (1913-1994, served 1969-1974), published 1978
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)