Ōnomatsu Midorinosuke

was a Japanese sumo wrestler from Noto Province. He was the sport's 6th yokozuna. He trained ōzeki Tsurugizan Taniemon.

Early career He was born in Shitsumi, Noto. His birth name remains ambiguous, but was claimed to be . He was born to poor farmers and worked as a stable boy in the countryside. There, he earned a reputation in amateur sumo and decided to move to Edo in 1815 and got introduced to . He made his debut under the shikona in March 1815 and won the jonokuchi tournament.

Makuuchi career He reached the top makuuchi division in October 1822 and transferred to the Shikoroyama stable. He began to wrestle for the Chōshū Domain under the ring name . He was promoted to ōzeki in October 1826. In March 1827, he was given his definitive ring name by his lord and was renamed to evoke a famous scenic spot in Hagi, Yamaguchi (once part of the Chōshū domain). In 1936, a monument made of natural stone pulled up from the seabed of Ugawa Port was erected the by a resolution of his hometown Ugawa Village. Championships for the best record in a tournament were not recognised or awarded before the 1909 summer tournament, and the unofficial championships above are historically conferred. For more information, see yūshō.