The siege of Uto was a battle during the final years of the Azuchi–Momoyama period (17th century) of Japan.

Uto castle at the time had belonged to his old rival, Konishi Yukinaga who joined western forces under Mōri Terumoto's and Ishida Mitsunari side.

Yukikage sent a messenger to ask for reinforcement from Konishi Yukishige and the Shimazu clan in Mugishima Castle.

The defender in Mugishima castle believed it and sent a reinforcement, which was defeated by Kato Kiyomasa.

However, they fought bravely and Yukikage managed to kill Kato senior vassal, Kajiwara Kagetoshi (梶原景俊).