The Owari Domain (尾張藩 Owari han) was a feudal domain of Japan in the Edo period. Located in what is now the western part of Aichi Prefecture, it encompassed parts of Owari, Mino, and Shinano provinces. Its headquarters were at Nagoya Castle. At its peak, it was rated at 619,500 koku, and was the largest holding of the Tokugawa clan apart from the shogunal lands. The daimyo of Owari was Tokugawa-Owari family, the first in rank among the gosanke. The domain was also known as Nagoya Domain (名古屋藩)