The Australia national under-20 rugby union team, nicknamed the Junior Wallabies, is the national under-20 rugby union team that represents Australia.

Australia's highest finish at the World Rugby U20 Championship was second-place in 2010[1][2] and 2019.

[4] The Junior Wallabies also finished second in the first four editions of the Oceania U20 Championship before being crowned champions in 2019 after defeating New Zealand 24–0.

[8][9] In the era of amateur rugby from the 1950s onwards, the Junior Wallabies team was selected from uncapped players (with no age restriction) to play against touring Test sides[10][11] or to represent Australia on goodwill tours to Asia and the Pacific.

[17][18] Summary for all competitive test matches up to and including the 2024 season: The following Australia U20s players have been recognised at the World Rugby Awards since 2008:[28]