Ōta Sukekatsu (太田 資功, June 24, 1827 – February 12, 1862) was the 6th daimyō of Kakegawa Domain in Tōtōmi Province, (modern-day Shizuoka Prefecture) in late-Edo period Japan and 10th hereditary chieftain of the Kakegawa-Ōta clan.
He was received in formal audience by Shogun Tokugawa Ieyoshi in March 1841 and became head of the Ōta clan and daimyō of Kakegawa on his father's retirement on June 10 of the same year.
He was appointed to the offices of sōshaban in 1847 and Jisha-bugyō in 1849, but resigned from his posts in 1856 due to ill health.
However, on his death, the position of daimyō of Kakegawa went to his younger brother, Ōta Sukeyoshi.
His grave is at the Ōta clan bodaiji of Myōhokke-ji in Mishima, Shizuoka.