The Battle of Ishibashiyama (石橋山の戦い, Ishibashiyama no tatakai) was the first in which Minamoto no Yoritomo, who became shōgun less than a decade later, was commander of the Minamoto forces. The battle was fought on September 14, 1180, in the southwest of present-day Odawara, Kanagawa Prefecture, near Yoritomo's headquarters at Kamakura.