The siege of Tottori Castle occurred in 1581 and was part of Oda Nobunaga's campaign to consolidate his power in western Honshu in an effort to unite Japan during the late 16th century. The siege was fought between Hashiba Hideyoshi, an Oda clan general, against a garrison under an ally of the Mōri clan. It is a case in which starvation tactics were successfully used in a Sengoku Period siege. The siege lasted up to 200 days, when Kikkawa Tsuneie committed suicide to save his men from cannibalism.