 Kane competed in the 2008 Ivan Hlinka Memorial Tournament, capturing gold with Canada's under-18 team. He totalled four points in four games, including an assist in the 6 – 3 gold medal game win against Russia. Later that year, Kane competed on Team Canada during the 2009 World Junior Ice Hockey Championships. As the youngest player on the team, Kane contributed six points in six games, helping Canada to a fifth-straight gold medal with a 5 – 1 victory over Sweden in the final.
