Shōichirō Ōmi is a Japanese voice actor and stage actor from Tokyo, born on October 5. He is represented by the agency mitt management, having moved there from Sony Music Artists in September 2024.

Ōmi began his performance career on stage, making his debut in the 2016 theatrical production of Arcana Famiglia: Valentino. He was a successful participant in the Tsukino Talent Production real audition, Tsukino Music Grand Prix 2016, leading to his involvement in related projects. He is also known as a member of the idol unit Hi!Superb, where he goes by the name OMI, starting in March 2018.

In the field of voice acting, his debut anime role was a minor part as a subordinate in the television series 91Days. He has since voiced the character Tōgo Tachibana in the sports anime series Futsal Boys!!!!!, which aired from January to March 2022.

Beyond his voice work, Ōmi has a substantial history in stage productions. He has performed as Belphegor in the stage adaptations of the popular manga and anime series Reborn! and played the lead role of Fujimaru Ritsuka in the stage play Fate/Grand Order THE STAGE -Absolute Demonic Front: Babylonia-. His other notable stage credits include roles in productions based on B-PROJECT, Mob Psycho 100, and various theatrical iterations of the Arcana Famiglia series.

His career is also notable for his participation in multimedia franchises that blend voice acting with live performance and music, a common path for actors in 2.5-dimensional entertainment. He won the Tsukino Music Grand Prix 2016, a competition that launched his career in the Tsukino Talent Production universe.