, also known as , was the 10th shà Âgun of the Ashikaga shogunate who headed the shogunate first from 1490 to 1493 and then again from 1508 to 1521 during the Muromachi period of Japan.
Yoshitane was the son of Ashikaga Yoshimi and grandson of the sixth shà Âgun Ashikaga Yoshinori. In his early life, he was named Yoshiki (sometimes translated as Yoshimura), and then Yoshitada — including the period of when he is first installed as shà Âgun; however, he changed his name to Yoshitane in 1501 in a period when he was temporarily exiled, and it is by this name that he is generally known today.
The 9th shà Âgun Ashikaga Yoshihisa died in 1489 on a battlefield of southern à Âmi Province. Yoshihisa left no heir; and Yoshitane became Sei-i Taishà Âgun a year later.
Yoshitane was appointed shà Âgun in 1490. Hà Âjà  Sà Âun gains control of Izu the following year. In 1493, Hatakeyama Yoshitoyo forced Yoshitane to abdicate after he lost in a power struggle against Hosokawa Masamoto. Yoshitane was formally replaced by the eleventh shà Âgun, Ashikaga Yoshizumi.
Emperor Go-Kashiwabara acceded to the throne in 1500. à Âuchi Yoshioki restored Yoshitane to the position of Sei-i Taishà Âgun from Yoshizumi. In 1520, a succession crisis occurred over Hosokawa Takakuni's post. When Takakuni became Kanrei (shogun's deputy), Yoshitane strongly opposed him and he was driven out. In 1521, Emperor Go-Kashiwabara appointed Ashikaga Yoshiharu as the twelfth shà Âgun after Takakuni arranged him to replace Yoshitane.
Eventually, after a further power struggle with the Hosokawa clan and especially with Hosokawa Takakuni, Yoshitane was forced to withdraw to Awaji Island. He died in Awa province, on the island of Shikoku in 1523.
Shà Âgun Yoshitane adopted the son of Yoshizumi who was his cousin, Ashikaga Yoshitsuna and he designated Yoshitsuna as his heir and as his anticipated successor as shogun. However, when Yoshitane died prematurely, he was not succeeded by who he had chosen; rather, his father's newly designated heir was accepted by the shogunate as shà Âgun Yoshizumi.
In other words, after the death of his son, shà Âgun Yoshimasa adopted the son of his brother, Yoshimi. After the death of his adopted son, Yoshimasa adopted the son of another brother, Masatomo. Shogun Yoshimasa was succeeded by shà Âgun Yoshihisa (Yoshimasa's natural son), then by shà Âgun Yoshitane (Yoshimasa's first adopted son), and then by shà Âgun Yoshizumi (Yoshimasa's second adopted son). Yoshizumi's progeny would become shà Âguns in due course.
Eventually, the great-grandson of Yoshitane would be installed as a puppet shà Âgun for a brief period, but external power struggles would unseat him, and the Ashikaga dynasty of shà Âguns would end.
The years in which Yoshitane was shogun are more specifically identified by more than one era name or nengà Â.