ETB may refer to:

Technology

* ETB (company), a Colombian telecommunications company * Electric trolley bus * Electronic throttle body, in vehicles * End-of-Transmission-Block character, in computing * Engineering and Technology Board, now EngineeringUK, a UK organisation that promotes engineering * Ethernet Train Backbone, a train communication network

Other uses

* Education and Training Board, a public body in Ireland * Elite Trainer Box, a booster box for the Pokémon trading card came * Endothelin B receptor, a protein * Equitorial Trust Bank, a Nigerian commercial bank * Etebi language of Nigeria * Ethiopian birr, the currency of Ethiopia * Euskal Telebista, a television network in the Basque Autonomous Community {{disambiguation