Ouchi Yoshimitsu (died c. 1187) was the daimyo of the Ouchi clan of Kyushu during the Genpei War. He was descended from King Seong of Paekche of Korea, and was aligned with the Taira. Yoshimitsu was an enemy of the Kamakura Minamoto, and died by 1187. He was succeeded by Ouchi Mochitoyo.