|Hioki, Kagoshima, Kagoshima Prefecture, Japan|
|Owner||Ijuin clan, Shimazu clan|
|Built by||Ijuin clan|
|Shimazu Tadayoshi, Shimazu Takahisa|
Ichiuji Castle was built by the Ijuin clan and was later controlled by the Shimazu clan. In 1536, Shimazu Takahisa moved the original base of power for the Shimazu clan from Izaku Castle. But Shimazu Takahisa moved to Uchi Castle in 1550. In 1549, Francis Xavier visited the castle to meet Shimazu Takahisa.