Amago Haruhisa (尼子 晴久, March 8, 1514 – January 9, 1561) was a daimyō warlord in the Izumo Province, Chūgoku region of western Japan.
His childhood name was Saburōshirō (三郎四郎) In 1540, the Siege of Koriyama against Mōri Motonari ended in a humiliating defeat,[2] and many of his retainers defected believing that Haruhisa's days were numbered.
From this point, Haruhisa worked to secure his footing and control of such domains as Izumo, Hōki, Mimasaka, and Oki.
In his later years, Haruhisa suddenly decided to kill his uncle Amago Kunihisa as well as those retainers under him collectively called Shingūtō (新宮党) from the town Shingū which was their power base, resulting in a serious shortage of battle-proven leaders.
Haruhisa collapsed in Gassantoda Castle in late 1560 while engaged in a battle against Motonari and died on 9 January 1561.