Iraklio OAA B.C. (Greek: Ηράκλειο OAA KAE), also known simply as Iraklio, or Heraklion, is a Greek professional basketball club that is based in the city of Heraklion, on the island of Crete, in Greece. It is a department of the Heraklion Tennis and Team Sports Club (Greek: Όμιλος Αντισφαιρίσεως και Αθλοπαιδιών - OAA - «Ηράκλειο»), a multi-sport club established in Heraklion in 1928. The club's basketball department was founded in 1968, and currently competes in the Cretan Basket League, hosting its home games at the Heraklion Indoor Sports Arena, a multi-purpose indoor arena with a capacity of 5,500 spectators. Irakleio is considered the most successful basketball club in Heraklion, being the sole club to have represented the city in the top-tier Greek Basket League, as well as the most successful club on the island of Crete, at least until the rise of the Rethymno Cretan Kings in the early 2010s. Iraklio OAA further administers competitive departments for tennis, table tennis and chess.
