| ORFEY |
| Orffee |
| Orfil |
| Orfiz |
| Orfny |
| Orford String Quartet |
| Orford String Quartet & Armin Electric Strings |
| ORG 4our |
| ORG Only Mass |
| ORG Prophecy |
| Orga & Ill Krux |
| Orgadod |
| Organ |
| Organ & Chimes |
| Organ Donor |
| Organ Donors Unanimous |
| Organ Eyes |
| Organ Freeman |
| Organ Radio 12 |
| Organ X |
| Organ!k |
| Organectomy |
| Organek |
| Organek ONA |
| Organic |
| Organic Androids |
| Organic Audio |
| Organic Bomb |
| Organic Culture |
| Organic Illusion |
| Organic Mechanic |
| Organic Records & tgn prod. |
| Organic Swag |
| Organically Good Trio |
| Orgânico |
| Organicways |
| Organik |
| Organima |
| Organised Noise |
| Organised Scum |
| Organisers |
| Organism 12 |
| Organismen |
| Organista Na Miarę |
| Organista parafii Matki Bożej Wspomożenia Wiernych w Lublinie, Salezjanie |
| Organista Paweł |
| Organizacion Apache 16 de gerardo Magallon |
| Organizacion Magallon |
| Organizacion Privada |
| Organize |
| Organized Konfusion |
| Organized Madness |
| Organized Noize |
| Organized Rhyme |
| Organizm |
| Organoclorados |
| Organoizes |
| Organs & Chimes |
| Organs and Chimes |
| Organtic |
| Organy - kościół św. Klemensa - Wieliczka |
| Orgasmo |
| Orgasmo de Porco |
| Orgazma |
| Orgazme |
| Orgen ZR |
| Orgesa Zaimi |
| Orgi |
| Orgi-E |
| Orgi69 |
| Orgone |
| Orgonetic |
| Orgullo Azul y Oro |
| Orgullo Follonero |
| Orgullo Guerrerense |
| Orgullosamente!! Banda Vanidosa |
| Orgy |
| ORH |
| Orhan Aydin |
| Orhan BAKIMCI |
| Orhan Çağlayan |
| Orhan Can Baylan |
| Orhan Canayakın |
| Orhan Canses |
| Orhan Demir |
| Orhan Ekin |
| Orhan Esen |
| Orhan gencebay |
| Orhan Görgülü |
| Orhan Hakalmaz |
| Orhan Haskaya |
| Orhan Helvacıoğlu |
| Orhan Koç |
| Orhan Ölmez |
| Orhan Osman |
| Orhan Söğüt |
| Orhan Temur |
| Orhan Türkoğlu |
| Orhan Ulaş |
| Orhanyigit |
