Ōuchi Yoshihiro (大内 義興, 1356–1400), also known as Ouchi Sakyo-no-Tayu, was a Muromachi period samurai clan head and military leader.
During the year of 1391, in the name of the shōgun, Ashikaga Yoshimitsu, Yoshihiro led an army against the Southern Court adherents in the Capital region.
Yoshihiro however made an agreement with some Inland Sea pirates to create a naval blockade against the enemy forces.
During the 12th month of 1399 Bakufu troops managed to set fire to the city, and Yoshihiro ended up having to commit suicide to avoid the invading forces under Yoshimitsu.
Apart from military actions, Yoshihiro was involved with trading between China and worked towards securing Ōuchi dominance in that area.