Tanaka Domain (田中藩 Tanaka-han?) was a feudal domain under the Tokugawa shogunate of Edo period Japan, located in Suruga Province in what is now modern-day Fujieda, Shizuoka. Tanaka Domain was controlled by a large number of daimyō families in the course of its history, seldom for more than one generation.
Nakamura Kazutada, a retainer of Toyotomi Hideyoshi and castellan of Sumpu Castle built Tanaka Castle as a subsidiary fortification guarding the eastern approaches to Sumpu. After the defeat of the Toyotomi forces at the Battle of Sekigahara, he was relocated to Yonago by the victorious Shōgun Tokugawa Ieyasu. Ieyasu kept Sumpu Castle for himself, and gave Tanaka Castle to his retainer Sakai Tadatoshi in 1601, with revenue of 10,000 koku. This marked the start of Tanaka Domain. Tadatoshi developed Fujieda-juku into a post station on the Tōkaidō, and as a castle town. He was so successful in his efforts that he was rewarded with a larger domain at Kawagoe in Musashi province in 1607, and Tanaka Domain reverted to direct Shogunal control.