- Otacilio Melgaço
- O'taïm
- Otakar Kraus
- Otakar Novacek
- OTAKHEE
- 大瀧詠一
- Otaku
- OtaMedia Presents
- 大溪晏弘
- Otar
- Otargos
- Otarl
- Otasco
- Otavalomanta
- Otavio Augusto/Gabriel
- Otavio E Eliete
- OTB
- OTB
- O.T.B.
- O.T.C
- Otchenga Zoom
- Otecko
- Oteil and the Peacemakers
- Oteil Burbridge
- Oteil & the Peacemakers
- Oteino
- Otel Beccheri
- Otello Boccaccini
- Otello Savoia
- Otem
- Otem Rellik
- Otenki
- Otep
- Otesanek
- OTF
- Otfried Preußler
- Otfried Preussler
- Otfried Preussler
- O.T.G.
- Otger Dice
- OTH
- O.T.H.
- Otha Cooper
- Otha T. Carpenter
- Otha Turner
- Otha Turner & The Afrossippi Allstars
- Otha Yurner
- Othaman
- Othar Broadnax
- Othar Turner
- Othar Turner and the Rising Star Fife and Drum Band
- Othar Turner & the Afrossippi All Stars
- Othar Turner's Rising Star Fife Drum Corps
- Othea George
- Othella Dallas
- Othello
- Othello Molineaux
- Othello & the Pocket Change Band