Bediako has competed internationally for the Canada men's national under-19 basketball team. He averaged 1.8 points and 2 rebounds per game in the 2018 FIBA Under-18 Americas Championship as Canada finished second in the tournament. In the 2018 FIBA Under-17 Basketball World Cup, Bediako averaged 3.3 points and 3.1 rebounds per game as Canada finished fourth in the tournament. In the 2021 FIBA Under-19 Basketball World Cup, Bediako averaged 4 points and 2.9 rebounds per game, helping Canada win the bronze medal.