| Abbreviation | Definition |
|---|---|
| OCWA | Orange County Wrestling Association |
| ODB | One Dirty B*itc |
| OHW | Our Hardcore Wrestling |
| OOWC | Oshawa Olympic Wrestling Club |
| OSW | Old School Wrestling |
| OTCW | Off The Chains Wrestling |
| OVW | Ohio Valley Wrestling |
| OWA | Oratory Wrestling Alliance |
| OWC | Orangemen Wrestling Commision |
| OWE | Oriental Wrestling Entertainment |
| OWF | Official Wrestling Federation |
| OWF | Online Wrestling Fed |
| OWF | Outlaw Wrestling Federation |
| OWL | Outlaw Wrestling League |
| OWO | Oregon Wrestling Observer |
| OWW | Obsessed With Wrestling |
| OWW | Online World of Wrestling |
| OYW | Ohio Youth Wrestling |
| PAJW | Pennsylvania Junior Wrestling |
| PAW | Public Access Wrestling |