ELN may refer to:
Paramilitary National Liberation Army (Colombia) (Spanish: ), involved in the continuing Colombian armed conflict Ñancahuazú Guerrilla, a guerilla group active in the Cordillera Province, Bolivia from 1966 to 1967 National Liberation Army (Peru) (Spanish: ), a guerilla group active in 1965
Science ELN (gene), coding for Elastin Electronic lab notebook
Other uses Bowers Airport, serving Ellensburg, Washington, United States East Lothian, historic county in Scotland, Chapman code Élan, an Irish pharmaceutical company Equity-linked note, a financial instrument European Leadership Network, a European think-tank Emerging Leaders Network, a program of Toronto-based CivicAction