The 2021 All Japan High School Soccer Tournament (All Japan JFA 100th High School Soccer Tournament (Japanese: 第100回全国高等学校サッカー選手権大会)) marked the 100th edition of the referred annually contested cup for High Schools over Japan.
However, they were eliminated in their first match on the 2021 tournament, losing 2–0 to Saga Higashi.
In the end, Aomori Yamada won their 3rd title, with a 4–0 win in the final against Ohzu, who qualified for the final over Kanto Daiichi's withdrawal on the semi-finals, due to coronavirus-related issues that prevented their participation on the semi-finals.
[4] They are: In parentheses: the amount of times each team qualified for the All Japan High School Tournament (appearance in the 2021 edition included) [5] The draw to decide the match pairings was conducted on 15 November.
[6][7] Assistant referees: Osamu Akasaka Soichi Iwasaki Fourth official: Takahito Seta Match rules The following 37 players featured in the Tournament's Best Players Squad:[10]