Mōri Motonari (1497–1571) was a prominent Japanese daimyō during the Sengoku period. He ruled the Mōri clan and is known for his strategic prowess and military leadership. Under his command, the clan expanded its territory in the western part of Honshu, becoming a significant power in the region. Motonari is often celebrated for his innovative tactics and ability to unite various factions. He successfully defended his domain against rival clans, including the Ouchi and Amago. His legacy includes not only military achievements but also contributions to governance and culture in Japan.