Ogawa Suketada (小川 祐忠; 1549–1601) was a daimyō (warlord) in feudal Japan during the Azuchi–Momoyama and Edo periods.
After Katsutoyo died, Suketada served Toyotomi Hideyoshi in Invasion of Shikoku (1585).
In 1600, at the Battle of Sekigahara, initially he was part of "Western Army" of Ishida Mitsunari.
During the battle he betrayed Mitsunari and switched sides to join Tokugawa Ieyasu's "Eastern Army" along with Kobayakawa Hideaki, Wakisaka Yasuharu, Kutsuki Mototsuna and Akaza Naoyasu.
Ieyasu won the battle and became the de facto ruler of Japan.