Ryosuke Doi (土井 陵輔, Doi Ryōsuke, born 7 January 2002) is a Japanese artistic gymnast. In 2019, he won the gold medal in the team event and the silver medal in the men's all-around event at the 2019 Junior World Artistic Gymnastics Championships held in Győr, Hungary. In the floor exercise he finished in 4th place. In 2016, he won the silver medal in the junior men's floor exercise at the 2016 Pacific Rim Gymnastics Championships held in Everett, Washington, United States.