Ern or ERN may refer to:
Transport Eirunepé Airport, in Brazil Engenho da Rainha Station, on the Rio de Janeiro Metro Ernakulam Town railway station, in Kerala, India Ernest Airlines, an Italian airline
Other uses Elizabeth Reid Network, an Australian network for women in politics Employer Reference Number, an identifier in the UK tax system Erin Energy Corporation, an American oil and gas company Eritrean nakfa, the currency of Eritrea Ern (given name) Error-related negativity, a component of an event-related potential in an electroencephalograph Sea eagle, any bird of prey in the genus Haliaeetus White-tailed eagle (H. albicilla)
See also Erne (disambiguation) Erna (disambiguation)