Antetokounmpo represented Greece for the first time in July 2013 with the Greek Under-20
national team at the 2013 FIBA Europe Under-20 Championship. He helped Greece to an 8–2
record and a fifth-place overall finish, while averaging 8.0 points, 7.6 rebounds, and 2.2 assists
across the ten games. He finished the tournament ranked second in defensive rebounds (7.0)
and seventh in blocked shots (1. 4).[13]