
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | YZ | 

| LABELS | VILLES | ETATS | DIRIGEANTS | |
| O CROSS | . | . | . | US | 
| O'BRIEN | Hermitage | TENNESSEE | . | US | 
| O'CONNER | . | . | . | US | 
| O'Connor Method | . | . | . | US | 
| O'HARA | . | . | . | US | 
| O.B. | Bowling Green | MISSOURI | . | US | 
| O.E.K. | . | . | . | US | 
| O-HA | . | . | . | UK | 
| O-Seven | . | . | . | US | 
| OAK | Elm City | NORTH CAROLINA | . | US | 
| OAK | Abilene | TEXAS | . | US | 
| OAK | Hamilton | OHIO | . | US | 
| OAK | . | . | . | UK | 
| Oak Street | . | . | . | CAN | 
| . | . | . | US | |
| OAKRIDGE | Fort Worth | TEXAS | . | US | 
| OAKRIDGE | . | . | . | US | 
| OASIS | Highland Park | MICHIGAN | . | US | 
| OBJECT | . | . | . | UK | 
| OBO | . | . | . | US | 
| Ocean | . | . | . | UK | 
| OCTAGON | . | . | . | NZ | 
| OCTAVIA | New York City | NEW YORK | . | US | 
| Octember | . | . | . | US | 
| OCTOBER | . | . | . | US | 
| ODE | . | . | . | US | 
| ODE | . | . | . | NZ | 
| ODEON | . | . | . | F | 
| ODIO DISQUES | . | . | . | F | 
| ODISSEY | . | . | . | US | 
| Odyssey | . | . | . | UK | 
| ODLE | . | . | . | US | 
| OFF BEAT | . | . | . | UK | 
| Off The Verge | Nashville | TENNESSEE | . | US | 
| OFFA | . | . | . | UK | 
| OFFICIAL | . | . | . | US | 
| OFFICIAL | . | . | . | UK | 
| OFFICIAL | . | . | . | DK | 
| Offshore | . | . | . | UK | 
| OG | . | . | . | UK | 
| Oglio | Las Vegas | NEVADA | . | US | 
| OH BOY | Nashville | TENNESSEE | . | US | 
| Oil Patch | . | . | . | US | 
| OJ | Memphis | TENNESSEE | Bill Biggs & C.J. Matthews | US | 
| OJM | . | . | . | US | 
| OJPI | . | . | . | US | 
| OK | . | . | . | S | 
| OK'ED | Houston | TEXAS | Bennie Hess | US | 
| OKAW | . | . | . | US | 
| OKEH | New York City | NEW YORK | Otto K. E. Heinemann | US | 
| OKIE | Morris | OKLAHOMA | . | US | 
| OKLAHOMA | New York City | NEW YORK | . | US | 
| Oklahoma Historical Society | . | OKLAHOMA | . | US | 
| OKLAHOMA TORNADO | . | . | . | US | 
| OL | . | . | . | US | 
| OL' PODNER | Houston | TEXAS | US | |
| Old Crow Medicine Show | . | . | . | US | 
| OLD DOMINION | . | . | . | US | 
| Old Fashion | . | . | . | I | 
| OLD GOLD | . | . | . | UK | 
| Old Guitar | . | . | . | US | 
| OLD HERITAGE | . | . | . | US | 
| OLD HIT | . | . | . | US | 
| OLD HOMESTEAD | Brighton | MICHIGAN | . | US | 
| OLD-ROCK | Tibro | VÄSTRA GÖTALAND COUNTY | . | SW | 
| Old Times | . | . | . | F | 
| OLD TIMER | Phoenix | ARIZONA | . | US | 
| OLD TIMEY | . | . | . | US | 
| OLD TOWN | New York City | NEW YORK | Hy Weiss | US | 
| Oldays | . | . | . | JAP | 
| Olde World | . | . | . | US | 
| Oldie Blues | . | . | . | NL | 
| OLDIES | . | . | . | US | 
| OLDIES 45 | . | . | . | US | 
| oldies but goodies | . | . | . | EUR | 
| Oldies Original Stars | . | . | . | GER | 
| OLDIES RARITIES | . | . | . | US | 
| OLDTIME CLASSICS | . | . | . | US | 
| Ole Heritage | . | . | . | US | 
| Ole Windmill | . | . | . | US | 
| OLIMPIC | Columbus | OHIO | Phil Gary | US | 
| OLIS | . | . | . | US | 
| OliveMe | . | . | . | US | 
| OLIVER | Boston | MASSACHUSETTS | Sandy Linzer et Denny Randell | US | 
| . | . | . | US | |
| OLIVI | . | . | . | F | 
| OLO | Nashville | TENNESSEE | . | US | 
| OLYMPIA | . | . | . | US | 
| OLYMPIC | New York City | NEW YORK | . | US | 
| OLYMPIC | Columbus | GEORGIA | . | US | 
| OLYMPIC | Milford | MICHIGAN | US | |
| OLYMPIC | Alvin | TEXAS | . | US | 
| OLYMPO | . | . | . | S | 
| OMAC | . | . | . | US | 
| OMAR | Fort Worth | TEXAS | . | US | 
| OMD | . | . | . | ? | 
| OMEGA | . | . | . | US | 
| OMEGA | . | . | . | B | 
| OMEGA STUDIO | Strasbourg | BAS-RHIN | . | F | 
| OMNI | . | . | . | AUS | 
| OMNIVORE | Los Angeles | CALIFORNIA | . | US | 
| OMP | . | . | . | US | 
| OMS | Durham | NORTH CAROLINA | . | US | 
| On Q Music | . | . | . | EUR | 
| ON SALE MUSIC | . | . | . | I | 
| ON THE CORNER | . | . | . | F | 
| ON THE HILL | . | . | . | JAP | 
| On The Square | New York City | NEW YORK | . | US | 
| Onacrest | . | . | . | US | 
| ONCE IN A BLUE MOON | . | . | . | US | 
| One & Only Blues | . | . | . | US | 
| One & Only Rock 'n' Roll | . | . | . | US | 
| ONE DAY | . | . | . | US | 
| One Louder | . | . | . | UK | 
| ONE MEDIA | . | . | . | UK | 
| ONE NUMBER ONE | . | . | . | F | 
| ONE STOP | . | . | . | AUS | 
| ONE WAY | Coral Springs | FLORIDA | . | US | 
| ONE-DERFUL | Chicago | ILLINOIS | Eddie Leaner et George Leaner | US | 
| One-Up | . | . | . | UK | 
| ONIE | . | . | . | US | 
| ONN | . | . | . | UK | 
| ONYX | . | . | . | US | 
| OOO | . | . | . | F | 
| OOZE MUSIC | . | . | . | RUS | 
| OPAL | Atlanta | GEORGIA | Danny Mote | US | 
| OPALO | . | . | . | S | 
| OPEN EVENEMENTS | . | . | . | F | 
| OPEN RECORDS | . | . | . | US | 
| OPEN ROAD | . | . | Ron Kitchener | CAN | 
| Open Sky | . | . | . | US | 
| OPERA | . | . | . | US | 
| Operators Special | . | . | . | US | 
| Opry | . | . | . | US | 
| OPRYLAND | . | . | . | US | 
| Optune | . | . | . | US | 
| OPUS | . | . | . | BRA | 
| ORANGE | Mobile | ALABAMA | . | US | 
| Orange Blossom | . | . | . | US | 
| ORB | . | . | . | US | 
| ORBIS | . | . | . | EUR | 
| ORBISON | . | . | . | US | 
| ORBIT | Hollywood | CALIFORNIA | . | US | 
| ORBIT | Huntsville | ALABAMA | . | US | 
| ORBIT | Dekalb | TEXAS | . | US | 
| ORBIT | Rochester | NEW YORK | . | US | 
| ORBIT | . | . | . | US | 
| ORBIT SOUND | Eugene | OREGON | Lloyd "Pappy" Smith | US | 
| ORCHARD | . | . | . | US | 
| ORCHESTRA | . | . | . | US | 
| Orchestrola | . | . | . | GER | 
| ORCHID | Bronx | NEW YORK | . | US | 
| ORCHID | New York City | NEW YORK | . | US | 
| ORCHID | . | . | . | US | 
| Orchid Of Memphis | . | . | . | US | 
| Oregon | . | . | . | CAN | 
| Madrid | . | . | S | |
| Orfeon Videovox | . | . | . | MEX | 
| ORFEU | . | . | . | POR | 
| Organic | Arden | NORTH CAROLINA | . | US | 
| ORIGIN | . | . | . | US | 
| ORIGINAL | Little Ferry | NEW JERSEY | Frank Natko | US | 
| Original Cast | . | . | . | US | 
| ORIGINAL GOLD | . | . | . | US | 
| ORIGINAL JAZZ LIBRARY | . | . | . | US | 
| ORIGINAL MASTERS | . | . | . | US | 
| ORIGINAL OLDIES | . | . | . | US | 
| Original Recordings Group | . | . | . | US | 
| ORIGINAL SOUND | Hollywood | CALIFORNIA | Art Laboe | US | 
| ORIGINAL SUN | . | . | . | I | 
| ORIOLE | . | . | . | US | 
| ORIOLE | LONDON | . | UK | |
| ORK | Jonesboro | Arkansas | Kenny Owen | US | 
| Orlador | . | . | . | S | 
| ORLANDO | . | . | . | US | 
| ORLANDO | . | . | . | F | 
| ORO | Modesto | CALIFORNIA | . | US | 
| ORPHEE | . | . | ? | |
| ORPHEUS | . | . | . | US | 
| Osborne Enterprises | . | . | . | US | 
| OSI MUSIC | . | . | . | US | 
| Osmond | . | . | . | US | 
| OSSIAN | . | . | . | US | 
| OT | . | . | . | US | 
| OT ROD | San Antonio | TEXAS | . | US | 
| OTD | . | . | . | US | 
| OTT | Arlington | VIRGINIA | . | US | 
| OUR | Los Angeles | CALIFORNIA | Eldon Minato | US | 
| OUR | Kansas City | MISSOURI | . | US | 
| OUR WORLD | . | . | . | GER | 
| OurVinyl TV | . | . | . | US | 
| Out | . | . | . | CAN | 
| Out & Out | . | . | . | EUR | 
| OUT OF TIME | . | . | . | SW | 
| OUT OF TOWN | . | . | . | US | 
| OUTLAW | University Park | NEW MEXICO | . | US | 
| OUTLAW | . | . | . | GER | 
| OUTLET | . | . | . | US | 
| Outline | . | . | . | GER | 
| Outreach | . | . | . | US | 
| Outside | . | . | . | CAN | 
| Outwest | . | . | . | US | 
| Ouver Entertainment | . | . | . | BRA | 
| OVAL | . | . | . | UK | 
| OVATION | . | . | . | US | 
| OVC | . | . | . | F | 
| OVERCOAT | . | . | . | US | 
| OVERSEAS | . | . | . | US | 
| OVERTONE | . | . | . | US | 
| OVERTURE | . | . | . | US | 
| Owe Man | . | . | . | US | 
| OWENS | Washington | DISTRICT OF COLUMBIA | . | US | 
| Owl | Wausau | WISCONSIN | Hoot Roberts | US | 
| OXBORO | . | MINNESOTA | . | US | 
| OXFORD | . | . | . | GER | 
| Oxford-Corbin | . | . | . | US | 
| OXYGENE | . | . | . | F | 
| OZAN MUSIC | . | . | . | US | 
| OZAR MUSIC | . | . | . | US | 
| OZARK | South Gate | CALIFORNIA | . | US | 
| OZARK | Sault Sainte Marie | MICHIGAN | . | US | 
| OZARK | Saint Louis | MISSOURI | . | US | 
| OZARK | Bailey | NORTH CAROLINA | . | US | 
| OZIT | . | . | . | UK |