- Ohagi Yasuji
- Ohama Anpan
- Ohama Mine
- Ohana Maurice
- Ohanami
- O'Hara
- O'Hara's Playboys
- 大橋のぞみ
- 大橋節夫
- Ohashi Takashi
- Ohashi Takuya
- おおはた雄一
- Ohayo
- OHCA
- OhD a.k.a. Mugz
- Ohde O
- Ohde O
- O´Heller Project
- Ohemaa Mercy
- Ohene
- Ohene Cornelius
- Oheneba Osei Yaw
- Oheneba PK
- Ohenis
- Ohenmaa Mercy
- Ohga
- ohGr
- 大黒摩季
- Ohhmarymary
- Ohi Ho Bang Bang
- Ohia
- Ohilyönti
- Ohio
- Ohio 101
- Ohio Baptist General Convention Mass Choir
- Ohio City Singers
- Ohio Defiance
- Ohio Express
- Ohio Grimes and Misted Meanies
- Ohio Knox
- Ohio Light Opera
- Ohio Light Opera Orchestra
- Ohio National Baptist Mass Choir
- Ohio Penitentiary 511 Jazz Ensemble
- Ohio Players
- Ohio State University Marching Band
- Ohio State University Wind Symphony
- Ohio University Singers
- Ohioan
- OHITSBRADY