Umegatani Tōtarō I (梅ヶ谷 藤太郎, March 16, 1845 – May 15, 1928) was a Japanese professional sumo wrestler from Shiwa, Chikuzen Province. He was the sport's 15th yokozuna. He was generally regarded as the strongest wrestler to emerge since the era of Tanikaze and Raiden.