Ōgaki Domain (大垣藩, Ōgaki-han) was a fudai feudal domain under the Tokugawa shogunate of Edo period Japan. It was located in Mino Province, in the Tōkai region of central Honshu. The domain was centered at Ōgaki Castle, in what is now the city of Ōgaki in Gifu Prefecture. It was ruled for most of its existence by the Toda clan.