Yotaro Sato (born 10 August 2004) is a Japanese artistic swimmer. He won the silver medal in the mixed duet technical routine at the 2022 World Aquatics Championships with his older sister Tomoka Sato, which was the first medal for Japan in the event at a FINA World Aquatics Championships other than a bronze medal, as well as a silver medal in the mixed duet free routine. As part of the 2022 FINA Artistic Swimming World Series, he won one gold medal and one silver medal in the mixed duet free routine and one gold medal in the mixed duet technical routine.