Ōta Sukemune (太田 資宗, December 27, 1600 – February 22, 1680) was a daimyō during early-Edo period Japan.
He continued in Ieyasu's service, receiving various minor commissions within the hierarchy of the Tokugawa shogunate, and in 1633 became one of the first group of wakadoshiyori.
From 1641–1643, he was appointed a bugyō overseeing the work of noted Confucian scholar Hayashi Razan.
In 1644, Sukemune was transferred to Hamamatsu Domain, a more prestigious posting, but with the same revenue rating of 35,000 koku.
He retired from public life in 1671, leaving the domain to his second son, Ōta Suketsugu.