佐竹氏
is a Japanese castle in the city Akita, Akita Prefecture, Japan. Throughout the Edo period, Kubota Castle was home to the Satake clan, "daimyō" of Kubota Domain, rulers of northern Dewa Province. The castle was also known as or . In the official documents of the Tokugawa shogunate, the castle was called , although this name is now more commonly used to refer to the Nara period fortified settlement of Akita Castle which was nearby.