was a Japanese samurai, daimyo and the fourth shà Âgun of the Ashikaga shogunate who reigned from 1394 to 1423 during the Muromachi period of Japan. Yoshimochi was the son of the third shà Âgun, Ashikaga Yoshimitsu, and the elder brother of the sixth shà Âgun, Ashikaga Yoshinori.
In 1394, Yoshimitsu gave up his shogunal title in favor of his young son, and Yoshimochi was formally confirmed in his office as Sei-i Taishà Âgun. Despite any appearance of retirement, the old shà Âgun didn't abandon any of his powers, and Yoshimitsu continued to maintain authority over the shogunate until his death. Yoshimochi exercised unfettered power as shà Âgun only after his father died in 1408.
In 1398, during the sixth year of the reign of King Taejo of Joseon, a diplomatic mission was sent to Japan. Pak Ton-ji and his retinue arrived in Kyoto in 1398 (Ã Âei 5, 8th month). Shogun Yoshimochi presented the envoy with a formal diplomatic letter; and presents were given for the envoy to convey to the Joseon court.
In 1408, Yoshimochi came into his own as a shà Âgun. The next year Ashikaga Mochiuji became Kantà  kubà Â. In 1411, Yoshimochi broke off relations with Ming China. Emperor Go-Komatsu abdicated in 1413, therefore Emperor Shà Âkà  ascended to the throne in repudiation of an agreement. This resulted in renewed hostility between the shogunate and supporters of the Southern Court. Dissension erupted between Ashikaga Mochiuji, the Kantà  Kubà  in Kamakura, and Uesugi Zenshà « (the Kantà  Kanrei) in 1415, and the Uesugi clan rebelled the following year, but it was quelled by Mochiuji by 1417.
A Korean attack on Tsushima (à Âei Invasion) happened in 1419, and a serious famine with great loss of life occurred the next year. In 1422, there was a resurgence in supporters of the Southern Court. Yoshimochi ceded authority to his son in 1423, but he had to retake responsibilities of the office of Shà Âgun when his son died in 1425. Yoshimochi followed his father's example by formally ceding his powers to a young son, who became the fifth Shà Âgun Ashikaga Yoshikazu, who was then 18.
The years in which Yoshimochi was shà Âgun are more specifically identified by one era name or nengà Â.