| Union | Tonga Rugby Union | ||
|---|---|---|---|
| Coach(es) | Liueli Fusimalohi | ||
| Captain(s) | Bill Fukofuka | ||
| League(s) | IRB Junior World Rugby Trophy | ||
| 2012 | 3 | ||
| |||
| First international | |||
 Tonga 9–48 New Zealand  (6 June 2008) | |||
| Largest win | |||
Tonga 23-3 Samoa  (21 June 2010) | |||
| Largest defeat | |||
 Australia 67–5 Tonga (9 June 2010) | |||
| World Cup | |||
| Appearances | 4 (First in 2008) | ||
| Best result | 10th, 2009 | ||
Preview warning: Page using Template:Infobox rugby team with unknown parameter "from"
The Tonga national under-20 rugby union team competes in the IRB Junior World Championship since its inception in 2008. It replaced the former under 19 and 21 world championships. They have appeared in every competition since.
In 2014, the Tonga under-20 team was invited to compete at the Australian Under 20 Rugby Championship.