Ōta Suketsugu (太田資次, January 13, 1630 – May 20, 1685) was a daimyō during early-Edo period Japan.
He entered the administration of the Tokugawa shogunate under Shōgun Tokugawa Ietsugu in 1673 as a Sōshaban (Master of Ceremonies) at Edo Castle and on July 26, 1676, he was appointed a Jisha-bugyō (Commissioner of Shrine and Temples).
In order to take up his posting to Osaka, he surrendered Hamamatsu Domain back to the shogunate, in exchange for 20,000 koku of additional territories scattered in Settsu, Kawachi and Shimōsa provinces.
Suketsugu was married to a daughter of Honda Tadatoshi, daimyō of Okazaki Domain.
His son, Ōta Sukenao, later became daimyō of Tanaka Domain in Suruga Province.