During his international career, he scored 50 goals in 108 appearances for the side, making him the nation's men's all-time record goalscorer.
He played his final game for Australia at the 2018 FIFA World Cup against Peru, and announced his retirement following the end of the tournament.
[3] Cahill made his debut for Australia in a friendly against South Africa in March 2004.
[9] During a 4–0 win over Bangladesh on 17 November 2015 in a 2018 World Cup second round qualifier, he scored the first three goals of the match, marking his second and final international hat-trick.
[16] On 10 October 2017, Cahill scored both goals in a 2–1 win over Syria during a 2018 World Cup fourth round qualifier.