The 70th All Japan High School Kendo Tournament (FY2023 All Japan High School Comprehensive Sports Festival Kendo Tournament) was held from August 3rd to 6th, 2023, at the Yotsuba Arena Tokachi in Hokkaido. We present the results of all 190 matches in the men's and women's individual events, as well as the 30 matches of the men's and women's team finals, in a play-by-play style featuring announcer 剣持 翔 and commentator 堂島 厳. Match results are based on the official tournament bulletins.