ATEI

ATEI is a four-letter acronym and can refer to:


 * Amusement Trades Exhibition International, the major UK trade show for the coin-op and amusements trade.
 * Technological Educational Institute (A.T.E.I., 2001~present) of tertiary education in Greece - (Ανώτατο Τεχνολογικὀ Εκπαιδευτικὀ Ιδρύμα)