was a Japanese samurai lord during the Sengoku period. He served as Kantà  Kanrei and shugo daimyo (governor) of Kà Âzuke and Musashi Province. His loss of Izu Province to Hà Âjà  Sà Âun in 1492âÂÂ1498 marked a significant development of the Sengoku period. He was a member of the Uesugi clan.
Nagao Tamekage, rose up against him in 1510 with the help of Hà Âjà  Sà Âun, seizing Izu Province and killing Akisada. Sà Âun, with Tamekage's help, would go on to conquer some of Sagami Province, and become one of the most major figures of the Sengoku period. Tamekage's son Uesugi Kenshin would likewise become a major samurai lord of the period, his rise with the Kantà  as the center of his power base, as the result of Akisada's loss, a crucial element to his success.