The Ireland national under-20 rugby team was formed in 2006, having previously been known as the under-21 team. It participates principally in the Under-20 Six Nations Championship which it has won on five occasions and the World Rugby Under 20 Championship where it has finished as runner-up twice.
Ireland Under-20's have won the Grand Slam four times and the Six Nations Championship five times: 2007(as the Under-21s) , 2010, 2019, 2022 and 2023. In the pandemic-truncated competition in 2020, Ireland won the Triple Crown. At the time the competition was halted, Ireland were undefeated and led the table. However, this was not considered a championship nor a grand slam.
Ireland won two consecutive Grand Slams in the 2022 and 2023 Six Nations championships, the only nation ever to do so at that point, but were denied a third consecutive Grand Slam and championship title following a final day draw away to England. Despite Ireland and England having both recorded four wins and a draw, England were crowned champions as they had earned one more try bonus point than Ireland.
Ireland Under-20's streak of fourteen consecutive Under 20-Six Nations victories (before the England match) and fifteen matches undefeated in the tournament over three seasons (after the match) are tournament records as of 2026; both streaks came to an end with defeat to England 3-19 in the first game of the 2024 tournament.
Head coach Andrew Browne named his 29âÂÂman squad for the 2026 U20 Six Nations on 20 January 2026.
The following Ireland U20s players have been recognised at the World Rugby Awards since 2008:
Correct as of 20 July 2025