Hidemasa Ogasawara (1569-1615) was the daimyo of the Ogasawara clan and father of Tadazane Ogasawara. Ruling the Akashi Domain in Harima Province, Hidemasa led reinforcements for the Tokugawa during the 1615 Osaka Campaign later in the battle. He was struck down in battle along with his other son and was succeeded by Tadazane.