Bands...
- Oasis
- Orange Goblin
- Ozzy Osbourne
- Oak's Mary
- The Oath
- Ocean Towers
- Octopussy
- ÖfÖ Am
- Olaf Deriglasoff
- Old Blood
- Old Loaves
- Om
- Omega
- On a Pale Horse
- Orange Sunshine
- Orc
- Orchid
- Orcus Chylde
- Ornament
- Orquesta del Desierto
- Orwells
- Otehi
- Oxcross
- Oz
- Ozenza
- Ozone Mama