Seiya Kimura is a Japanese actor and voice actor from Tokyo, born on September 10, 2004. He is affiliated with the talent agency Hirata Office. His career began at a young age, with his early work primarily consisting of roles in live-action television dramas and commercials.

Kimura is best known in animation for providing the voice of Kentaro Ohama, also known as Kenta, in the 2014 television anime series Barakamon. This role stands as his most recognized credit in the voice acting field. In addition to this main role, he voiced minor characters in other anime series. In 2016, he appeared in the anime Sweetness and Lightning, where he voiced the roles of Inuzuka's older brother and Shinobu's younger brother. His film voice work includes a part in the 2015 theatrical anime film The Boy and the Beast.

Outside of animation, Kimura has a substantial body of work as a child actor in Japanese television dramas and films. His live-action television credits include appearances in the morning drama Mare and the live-action film adaptation of Erased (Boku dake ga Inai Machi). He has also performed on stage, appearing in musicals such as The Prince of Tennis.

While his work as a voice actor is limited compared to his live-action roles, his performance in Barakamon remains his signature contribution to anime.