The Japan Dirt Classic (ジャパンダートクラシック) is a Japanese Domestic Grade 1 flat horse race in Japan for three-year-old thoroughbred colts and fillies run over a distance of 2,000 meters (approximately 1 mile 2 furlongs) at the Oi Racecourse, Shinagawa, Tokyo in early October.

Though the race was the last leg of triple crown of minami-kanto keiba (nankan keiba), while Kentucky Derby is the first one of American triple crown races.

In June 2022, it was announced that from 2024 that it will become the third leg of the Japanese Triple Crown of Dirt along with Haneda Hai and Tokyo Derby.

The name of the race was changed to Japan Dirt Classic and the schedule was moved to October.

Geldings will no longer be able to enter and prize money for 1st place was increased to ¥ 70,000,000.