Wilson debuted for Australia at the 2013 FIBA Oceania Under-16 Championship, averaging 5.3 points, 4.3 rebounds and 2.3 assists per game. In 2014, he competed at the FIBA Under-17 World Championship and the FIBA Oceania Under-18 Championship. At the FIBA Under-17 World Championship in Dubai, Wilson helped Australia reach the gold medal game, where they lost to the USA 99–92 despite a 23-point effort from Wilson. For the tournament, Wilson averaged 12.3 points, 6.6 rebounds and 1.7 assists per game. In 2015, at the FIBA Under-19 World Championship, he averaged 6.4 points, 4.4 rebounds and 2.8 assists per game. In March 2019, he made his debut for the Australian Boomers.