Shimazu Iehisa (島津 家久, 1547 – July 10, 1587) was a Japanese samurai of the Sengoku period, who was a member of the Shimazu clan of Satsuma Province. He was the fourth son of Shimazu Takahisa. He served in a command capacity during his family's campaign to conquer Kyūshū.
|Lord of Sadowara Castle|
|Preceded by||Itō Yoshisuke|
|Succeeded by||Shimazu Toyohisa|
|Died||1587 (aged 39-40)|
|Relatives||Shimazu Yoshihisa (brother)|
Shimazu Toshihisa (brother)
Shimazu Yoshihiro (brother)
|Battles/wars||Battle of Mimigawa (1578)|
Siege of Minamata (1581)
Battle of Okitanawate (1584)
Kyūshū campaign (1587)
His sons were Shimazu Toyohisa, Shimazu Tadanao, and Shimazu Mitsuhisa. He was nephew of 'Ten'ei-in' (wife of Tokugawa Ienobu) from his mother side and later he married Kamehime and daughter of Shimazu Yoshitaka, Mitsuhime.
He participated in the Battle of Mimigawa (1578), Siege of Minamata Castle (1582), Battle of Okitanawate (1584), and in 1587 he fought against Toyotomi Hideyoshi forces at Battle of Hetsugigawa and Battle of Takajo. In 1587, he suddenly died at Sadowara castle. There is a theory that he was poisoned when he visited Toyotomi Hidenaga's camp.
- "島津家久(1)（読み）しまづ いえひさ デジタル版 日本人名大辞典+Plus「島津家久(1)」の解説". kotobank. Retrieved 26 October 2021.
- Turnbull, Stephen (1998). The Samurai Sourcebook. London: Cassell & Co. p. 238. ISBN 9781854095237.