- Source: JN
JN or Jn may refer to:
Excel Airways (1994-2008, IATA airline designator)
Livingston Compagnia Aerea (2012-2014, IATA airline designator), an Italian airline
Jan Mayen (FIPS PUB 10-4 territory code), an island in the Arctic Ocean
Gospel of John, in Christian scripture
Johnson–Nyquist noise, electrical noise generated by random thermal motion in a conductor
Jornal de Notícias, a Portuguese newspaper
Jornal Nacional, a Brazilian flagship news program broadcast by Rede Globo
Jornal Nacional, former title of the Portuguese news program Jornal da 8 that is broadcast by TVI
al-Nusra Front, a Syrian militant group in the Syrian Civil War
JN, the official symbol for the Nambu Line in Japan