- Ojay & Quickmix
- O'Jays, The
- O.J.B.
- OJB Jezreel
- Ojdana
- Ojeda
- O.J.H.
- Ojh Quartet
- Oji
- Ojibwa Indian School Children
- Ojibwe Hymn Signers
- Ojibwe Hymn Singers
- Ojida
- Ojida
- OJM
- Ojo
- Ojo De Vidrio
- Ojo Rojo
- Ojo Taylor
- Ojobi Michael
- Ojoe
- Ojoge Daniel
- Ojorojo
- Ojos
- Ojos de Brujo
- Ojos De Tango
- Ojos En Daphne
- Ojos Locos
- Ojos Negros
- Ojos Rojos
- Ojos Rojos
- Ojota Criminal
- Ojoyo
- Ojpc
- Ojra & Kiritchenko
- Ojwang Ramogi
- Ojwang Ramogi
- OK
- OK
- Ok 2 Cross
- OK Band
- O.K. Chorale
- Ok City Ok
- OK Cobra
- OK Corral
- OK Cowboy !
- OK Go
- OK Hemingway
- OK Jive
- Ok Juhyeon
- OK KID
- Ok-Ma
- Ok! Misik
- OK OK
- OK Panic
- OK! Ryos