The 2024 Six Nations Under 20s Championship was the 17th Six Nations Under 20s Championship, the annual northern hemisphere rugby union championship for players under 20 years of age.

Ireland were the reigning champions, having won the title in both 2022 and 2023.

They managed four wins and a draw to match England's record for the championship, but England secured more bonus points to claim their 10th title, their first since 2021.

Table ranking rules: The fixtures for the tournament were announced on 20 July 2023.

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