Shuntaro Mezaki

is a Japanese badminton player from Niigata who competes in men's doubles events. He is a member of the Japanese national team and plays for the TONAMI Transportation badminton team. Mezaki reached a career-high men's doubles world ranking of No. 44 alongside his former partner Haruya Nishida. He won his first international title in 2022 at the Mexican International. In 2026, he reached his first final on the BWF World Tour at the Baoji China Masters with Yuta Oku.

Career Mezaki began his international career in a men's doubles partnership with Haruya Nishida. In February 2022, he represented Japan at the Asia Team Championships, where the men's team was eliminated in the group stage. Two months later, Mezaki and Nishida won their first international title at the Mexican International, defeating the German duo of Jones Ralfy Jansen and Jan Colin Völker.

Achievements BWF World Tour (1 runner-up) The BWF World Tour, which was announced on 19 March 2017 and implemented in 2018, is a series of elite badminton tournaments sanctioned by the Badminton World Federation (BWF). The BWF World Tour is divided into levels of World Tour Finals, Super 1000, Super 750, Super 500, Super 300, and the BWF Tour Super 100.

Men's doubles Year Tournament Level Partner Opponent Score Result Ref 2026 Baoji China Masters Super 100 Yuta Oku Ma Shang Shen Xuanyao 15–21, 21–19, 13–21 Runner-up 2022 Réunion Open Haruya Nishida Takuto Inoue Kenya Mitsuhashi 16–21, 21–18, 21–10 Winner 2023 Estonian International Haruya Nishida Julien Maio William Villeger 21–19, 21–14 Winner 2026 Luxembourg Open Yuta Oku Takuto Goto Tsubasa Yoshida 21–18, 21–12 Winner BWF International Challenge tournament BWF International Series tournament