ETN may refer to:
Chim-Nir Aviation, an Israeli airline whose ICAO designator is ETN
Eastern Television Network, in Somalia
Eaton Corporation, an American industrial manufacturer
Erie Times-News, a daily newspaper in Erie, Pennsylvania
Erythema toxicum neonatorum
Erythritol tetranitrate
E.T.N.: The Extraterrestrial Nasty, a 1967 American horror film
Eton language (Vanuatu)
Europe Trust Netherlands
Exchange-traded note
