Sin Yong-woo, also known as Yong-Wu Sin, is a South Korean voice actor born on March 19, 1976. He is widely recognized for his extensive contributions to the Korean-language dubbing of numerous anime series and animated films.

His career encompasses a vast range of prominent roles in anime. He is known for voicing Kyoya Ohtori in Ouran High School Host Club and Guiche in the various seasons of The Familiar of Zero, including The Familiar of Zero: Knight of the Twin Moons and The Familiar of Zero: Rondo of Princesses. He also lent his voice to Yasunori Kuroki in Nodame Cantabile and its sequel Nodame Cantabile: Paris. In the Digimon franchise, he voiced Mae-Tyu in the film Digimon Adventure: Last Evolution Kizuna. His other notable anime roles include Reishin Kou and Shuei Lan in The Story of Saiunkoku and its second series, Hans in Emma: A Victorian Romance Second Act, Nakatoshi Iwasaki in Gunparade Orchestra, and Cadis Etrama Di Raizel in Noblesse. In addition to these, his filmography features leading roles in major franchises such as Ichigo Kurosaki in Bleach, Neji Hyuga in Naruto and Naruto Shippūden, Shoto Todoroki in My Hero Academia, and Johann Liebert in Monster.

Beyond anime, Sin Yong-woo has an extensive body of work in other areas of animation and video games. He provided the Korean voices for characters in numerous Western productions, including Tadashi Hamada in Big Hero 6, Ernesto de la Cruz in Coco, Bruno Madrigal in Encanto, the title role in Danny Phantom, Chase in PAW Patrol, and Robin in Teen Titans Go. His work in video games includes voicing Reaper in Overwatch, Enforcer in Arknights, and Jumin in Mystic Messenger.