- O-Zone (9)
- O.N.A (1)
- O.N.И.K.S (1)
- O.Torvald (55)
- O'Hamsters (2)
- O3RO (1)
- Oag (13)
- Oak Ridge Boys (2)
- Oana Radu (1)
- Oar (34)
- Oasis (282)
- Oberon (1)
- obi (1)
- Obituary (25)
- OBLADAET (1)
- Oblomovblues (52)
- Ocean Colour Scene (39)
- Ocean Jet (1)
- Oceana (2)
- Ochman (1)
- Ochs Phil (10)
- Odium Caritas (1)
- Of Monsters And Men (19)
- Ofenbach (1)
- Offenbach (2)
- Offline Meetup (1)
- OFFMi (1)
- Offspring (148)
- offthepig! (2)
- Oflerg (1)
- Ogie Alcasid (2)
- Ogun Sanlisoy (1)
- Oh Wonder (6)
- OiN Одни из Нас (3)
- OITZMANN (8)
- OK Go (1)
- Okinawaluv (1)
- OknaRossa (1)
- OKS (9)
- Oktoberklub (1)
- Olaf Henning (1)
- Olby (3)
- Old Crow Medicine Show (2)
- Old Mans Child (21)
- Old Purple Hotel (2)
- Oldelaf (12)
- Oldenburg (1)
- Oldfield Mike (21)
- Oleander (22)
- Olehan (1)
- Olena Usenko (1)
- Oleynik (2)
- Oliver koletzki (1)
- Oliver Mandić (2)
- Oliver Tree (11)
- Olivia Addams (1)
- Olivia Rodrigo (1)
- Olivver the Kid (1)
- Ollane (2)
- Olly Alexander (1)
- Olly Murs (7)
- Olstan Van Guard (1)
- Olympic (7)
- OMAKA (1)
- Omar And The Howlers (1)
- Omarion (1)
- Omega (2)
- OMI (3)
- Omnia (1)
- Omnimar (1)
- Omnipotent Youth Society (1)
- OMNIXX (2)
- Omorikun (9)
- Onative (2)
- One Direction (115)
- One Dollar Short (22)
- One Glimpse Away (1)
- One Last Night (1)
- One Less Reason (2)
- One Minute Silence (14)
- One Ok Rock (6)
- One Pleasant Moment (2)
- One Sky (1)
- One sunny day in Syberia (3)
- One Two (1)
- ONE ZIM (1)
- One-T (1)
- Oneday (1)
- Onegene (3)
- OneLove (20)
- Onerepublic (33)
- Onesidezero (19)
- OneSTAR (1)
- ONEWE (1)
- Onlife (4)
- Onsa Media (1)
- OnTape (1)
- Onur Koç (1)
- OnΣ sunny day in Syberia (19)
- ooes (5)
- Oomph! (46)
- Oonagh (1)
- Open Kids (12)
- Open Space (1)
- Operation Ivy (44)
- Operation: Cliff Clavin (1)
- Opeth (34)
- OPG SVYATIE (2)
- Opium Project (8)
- Optimystica Orchestra (2)
- Opus (Austria) (1)
- OQJAV (12)
- OR3O (3)
- Orange And Lemons (2)
- Orange House (34)
- Orash (1)
- Orchestral Manoeuvres in the Dark (1)
- Ordo Rosarius Equilibrio (1)
- Organek (2)
- Orgy (52)
- Orient Pearl (2)
- Orleans (1)
- Orloge Simard (1)
- Ornella Vanoni (1)
- Os Paralamas do Sucesso (1)
- osaili (1)
- Osbourne Kelly (10)
- Osbourne Ozzy (114)
- Oscar Brown Jr. (1)
- Oscar Chávez (13)
- Oscar Isaac (2)
- Oscar Lang (1)
- Ospen (2)
- Ost+Front (1)
- Ost1n (1)
- Ostrova (3)
- Ostrovskaya (1)
- OSTY (2)
- Ot Vinta (6)
- Otherwise (1)
- Otis Redding (11)
- Ott Lepland (1)
- Ottawan (4)
- Ottenok (2)
- Otto Dix (16)
- Our Atlantic (2)
- Our Lady Peace (66)
- Our Last Night (5)
- Ours (17)
- OurWrongWay (1)
- Outgoing (1)
- Outkast (15)
- Outlandish (2)
- Outlaws (3)
- Outline In Color (1)
- Over Kill (38)
- Ovidiu Anton (1)
- Owar1 (2)
- Owl City (9)
- Oxana Trach (5)
- Oxxxymiron (59)
- OY Sound System (1)
- Ozark Mountain Daredevils (1)
- Ozma (21)
- Ozoi The Maid (1)
- Ozuna (1)