ETN

ETN may refer to:
 * Chim-Nir Aviation, an Israeli airline
 * 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
 * Travis Etienne, an American football running back