Shimazu Iehisa

For his nephew who later took his name, see Shimazu Tadatsune.

In this Japanese name, the surname is Shimazu.

Shimazu Iehisa
島津 家久
Lord of Sadowara Castle
In office 1579–1587
Preceded by	Itō Yoshisuke
Succeeded by	Shimazu Toyohisa
Personal details
Born	1547 Izaku Castle
Died	1587 (aged 39-40)
Children	Shimazu Toyohisa Shimazu Tadanao Shimazu Mitsuhisa
Parent	Shimazu Takahisa (father)
Relatives	Shimazu Yoshihisa (brother) Shimazu Toshihisa (brother) Shimazu Yoshihiro (brother)
Military service
Allegiance	Shimazu clan
Unit	Shimazu clan
Battles/wars	Battle of Mimigawa (1578) Siege of Minamata (1581) Battle of Okitanawate (1584) Siege of Tachibana (1586) Kyūshū campaign (1586-1587)

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.

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.