Omigawa Domain (小見川藩, Omigawa-han) was a minor feudal domain under the Tokugawa shogunate of Edo period Japan, located in Shimōsa Province (modern-day Chiba Prefecture), Japan.
Omigawai Domain was created for Matsudaira Ietada in 1594, a close associate of Tokugawa Ieyasu.
After he was transferred to Sakura Domain, Omigawa was granted to Andō Shigenobu, a retainer of Tokugawa Hidetada, who had also fought at Sekigahara.
Omigawa Domain was revived in 1724 for Uchida Masachika, who was demoted in status from the 15,000 koku daimyō of Kanuma Domain in Kōzuke Province to 10,000 koku at Omigawa due to crimes committed by his father Uchida Masayuki.
He was allowed to build a jin'ya in what later become the town of Omigawa, Chiba, where his successors continued to rule until the Meiji Restoration.