Ota Sukemoto (?? ??, August 28, 1799 – June 20, 1867) was the 5th daimyo of Kakegawa Domain in Totomi Province, (modern-day Shizuoka Prefecture) in late-Edo period and Bakumatsu period Japan and a high-level office holder within the Tokugawa shogunate, and ninth hereditary chieftain of the Kakegawa-Ota clan.