The 2024 Japan Club Youth U-18 Football Championship ( Japanese: 第48回 日本クラブユースサッカー選手権(U-18)大会) is the 48th edition of the contested tournament, held exclusively for Japan youth clubs affiliated with both J.League and Japan Club Youth Football Federation. Gamba Osaka are the defending champions. ^{[1] [2]}

As usual, the tournament will be held with 32 participating teams. With no direct entry or automatic qualification for the tournament, all participants had to qualify through regional qualification. The number of slots for each region were predetermined by the JFA prior to the qualifiers. The determined slot distribution was as follows:

The tournament start with a group stage, held with eight groups of four teams in each. Only the winner of each group qualifies for the quarter-finals. Each match during the group stage will be 70-minutes long, with two 35-minute halves and a 10-minute halftime break. From the quarter-finals onwards, the matches will be 80-minutes long, with two 40-minute halves and a 15-minute halftime break. In case of a draw, the match will directly proceed into penalty shoot-outs. On the final, a draw in regulation time will lead to a 20-minute extra-time, with penalty shoot-outs being held should the draw persists. ^[1]

About suspensions by yellow or red cards: ^[1]

• The qualifying rounds for this tournament will be considered as the same competition for disciplinary reasons, and any unused suspensions due to red card offenses at the end of the qualifying rounds will be applied in the tournament.
• A player who accumulates two yellow cards during the tournament will face an one-match suspension.
• Accumulated yellow cards given from the group stage to the quarterfinals will not be carried over to the semifinals. However, any unused suspensions given from the group stage to the quarterfinals will be carried over to the semifinals and applied.

The draw for the group stage pairings and knockout stage match-ups was held on 19 June 2024. ^[3]