| Oak Ridge High School (CA) | - | Junior | Small | 0 | |
| Oakland Middle School | - | Middle School | - | 0 | |
| Oakmont High School | - | - | - | 0 | |
| Oakmont High School | - | - | Large | 0 | |
| Oakville High School | - | Varsity | Large | 0 | |
| Oberlin Magnet Middle School | - | Junior | Large | 0 | |
| Obion County Central High School | - | Varsity | Large | 0 | |
| Oblivion All Stars | L5 | Open | - | 0 | |
| Oblivion Allstars | L5 | International Open | Large | 0 | |
| OC All Stars | L3 | Junior | Large | 0 | |
| OC All Stars | L7 | Open | Large | 0 | |
| OC All Stars | L7 | International Open | Large | 0 | |
| OC Elite | L1 | - | - | 0 | |
| Ocean Springs High School | - | Varsity | Large | 0 | |
| Ocean Springs High School | - | Varsity | Large | 0 | |
| Ocean Springs Middle School | - | Junior | Small | 0 | |
| Ocean Springs Middle School | - | Junior | Small | 0 | |
| Ocean Springs Middle School | - | Junior | Small | 0 | |
| Oceanside High School | - | Varsity | Large | 0 | |
| Oceanside High School | - | Varsity | Large | 0 | |
| Oceanside High School | - | Varsity | Large | 0 | |
| Oceanside High School | - | Varsity | Small | 0 | |
| Ocoee Middle School | - | Junior | Large | 0 | |
| Off Main All Stars | L5 | Senior | Large | 0 | |
| Ogden High School | - | - | Large | 0 | |
| Okanagan Firestorm Cheerleading | L2 | U16 | Large | 0 | |
| Oklahoma State University | - | - | Large | 0 | |
| Oklahoma State University | - | - | - | 0 | |
| Oklahoma Twisters | L3 | Senior | Large | 0 | |
| Olathe East High School | - | Varsity | Large | 0 | |
| Olathe Northwest High School | - | Varsity | Large | 0 | |
| Olathe Northwest High School | - | Varsity | Large | 0 | |
| Olathe Northwest High School | - | Varsity | Large | 0 | |
| Olathe Northwest High School | - | Junior | - | 0 | |
| Olathe Northwest High School | - | Varsity | Large | 0 | |
| Olathe West High School | - | Varsity | Medium | 0 | |
| Olathe West High School | - | Varsity | Large | 0 | |
| Old Bridge High School | - | Varsity | Small | 0 | |
| Old Bridge High School | - | Varsity | Large | 0 | |
| Oldham County High School | - | Varsity | Small | 0 | |
| Oldham County Middle School | - | Junior | Large | 0 | |
| Oldham County Middle School | - | Junior | Large | 0 | |
| Olentangy Berlin High School | - | Varsity | Large | 0 | |
| Olentangy Berlin High School | - | Varsity | - | 0 | |
| Oley Valley High School | - | Junior | Large | 0 | |
| Olive Branch High School | - | Varsity | Small | 0 | |
| Olive Branch High School | - | Varsity | - | 0 | |
| Olive Branch High School | - | Varsity | Large | 0 | |
| Olympia Allstar Cheerleading | L1 | U16 | Large | 0 | |
| Olympia Allstar Cheerleading | L3 | Open | Large | 0 | |
| Olympic Heights Comm HS | - | Varsity | Large | 0 | |
| Olympus | L5 | International Open | Large | 0 | |
| Olympus All Star Omega | L5 | International Open | Large | 0 | |
| Olympus High School | - | Varsity | Large | 0 | |
| On Pointe' Cheer | L1 | - | - | 0 | |
| One Dream Cheer | L3 | - | Large | 0 | |
| One Dream Cheer | L1 | - | Large | 0 | |
| One Dream Cheer | L3 | - | Large | 0 | |
| One Dream Cheer | L3 | - | - | 0 | |
| Opp High School | - | Varsity | Medium | 0 | |
| Opp High School | - | Varsity | Large | 0 | |
| Orange High School | - | - | Large | 0 | |
| Orange High School | - | Varsity | Large | 0 | |
| Orange High School | - | Varsity | Large | 0 | |
| Orange Lutheran High School | - | Junior | - | 0 | |
| Orange Lutheran High School | - | Varsity | Medium | 0 | |
| Orangefield High School | - | Varsity | Large | 0 | |
| Oregon Dream Team Dream | L5 | Senior | Large | 0 | |
| Organ Mountain High School | - | Varsity | Large | 0 | |
| Organ Mountain High School | - | Varsity | Large | 0 | |
| Orland High School | - | Varsity | Large | 0 | |
| Orland High School | - | Varsity | Medium | 0 | |
| Ossining High School | - | Varsity | Large | 0 | |
| Our Lady Academy | - | Varsity | Large | 0 | |
| Our Lady Of Lourdes Academy | - | Junior | - | 0 | |
| Our Lady Of Lourdes Academy | - | Varsity | Large | 0 | |
| Outlaws All Stars (Australia) | L5 | International Open | Large | 1 | |
| Outlaws Allstars | L6 | International Open | Large | 0 | |
| Oviedo High School | - | Varsity | Large | 0 | |
| Oviedo High School | - | Varsity | Large | 0 | |
| Oviedo High School | - | Varsity | Large | 0 | |
| Owasso High School | - | Varsity | Large | 0 | |
| Owen J Roberts High School | - | Junior | Large | 0 | |
| Owen J Roberts High School | - | Varsity | Large | 0 | |
| Owensboro High School | - | Varsity | Large | 0 | |
| Owensboro High School | - | Varsity | Small | 0 | |
| Owensboro High School | - | Varsity | Large | 0 | |
| Owensboro High School | - | Varsity | Medium | 0 | |
| Owensboro Middle School | - | Junior | Large | 0 | |
| Owyhee High School | - | Varsity | Large | 0 | |
| Oxford High School (MS) | - | Varsity | Large | 0 | |
| Oxford Middle School | - | Junior | Large | 0 | |
| Oxford Middle School | - | Junior | Large | 0 | |
| Ozark High School | - | Varsity | Large | 0 | |
| PA Cheer Club | - | Open | Large | 0 | |
| PA Cheer Club | - | Open | Large | 0 | |
| PA Legacy Cheerleading | L1 | - | - | 0 | |
| PA Legacy Cheerleading | L1 | - | Large | 0 | |
| Pacetti Bay Middle School | - | Junior | Large | 0 | |
| PACIFIC COAST MAGIC INC. | L5 | Senior | Large | 0 | |
