| Nu Matics Athletics | L2 | Junior | Small | 0 | |
| Nu Matics Athletics | L1 | Tiny | - | 0 | |
| Nu Matics Athletics | L2 | Junior | Small | 0 | |
| Nu Matics Athletics | L3 | Junior | Small | 0 | |
| NUCC DOLPHINS | L2 | Junior | Small | 0 | |
| Nuclear Athletics | L2 | Junior | - | 0 | |
| NWI Fury | L2 | Junior | Small | 0 | |
| NWI Fury | L2.2 | Junior | - | 0 | |
| NWI Fury | L1.1 | Junior | - | 0 | |
| NXS | - | Junior | Small | 0 | |
| NXS | - | Junior | Small | 0 | |
| NXT LVL | L3 | Junior | - | 0 | |
| O Stars Cheerleading | L1 | Junior | - | 0 | |
| O Stars Cheerleading | L1 | Junior | - | 0 | |
| O-Xtreme | L2 | Junior | Small | 0 | |
| O.Henry Middle School | - | Junior | - | 0 | |
| O.N.E. All Stars PA | L2.2 | Junior | - | 0 | |
| Oak Forest Academy | - | Junior | - | 0 | |
| Oak Grove High School | - | Varsity | - | 0 | |
| Oak Grove High School | - | Varsity | - | 0 | |
| Oak Grove High School | - | Junior | Small | 0 | |
| Oak Grove Middle School | - | Junior | - | 0 | |
| Oak Grove Middle School | - | Junior | Small | 0 | |
| Oak Grove Middle School | - | Junior | Large | 0 | |
| Oak Hills Juniors | - | Junior | - | 0 | |
| Oak Hills Juniors | - | Junior | - | 0 | |
| Oak Mountain High School | - | Junior | Small | 0 | |
| Oak Mountain Middle School | - | Junior | - | 0 | |
| Oak Mountain Middle School | - | Junior | Large | 0 | |
| Oak Mountain Middle School | - | Junior | - | 0 | |
| Oak Mountain Middle School | - | Junior | Small | 0 | |
| Oak Ridge High School (CA) | - | Junior | - | 0 | |
| Oak Ridge High School (CA) | - | Junior | - | 0 | |
| Oak Ridge High School (CA) | - | Junior | Large | 0 | |
| Oak Ridge High School (CA) | - | Junior | Small | 0 | |
| Oakland High School | - | Junior | Small | 0 | |
| Oakland High School | - | Junior | Small | 0 | |
| Oakland High School | - | Varsity | Small | 0 | |
| Oakland Middle School | - | Junior | - | 0 | |
| Oakland Middle School | - | Middle School | - | 0 | |
| Oakland Middle School | - | Junior | - | 0 | |
| Oakville High School | - | Junior | - | 0 | |
| Oakville High School | - | Junior | - | 0 | |
| Oakville High School | - | Junior | - | 0 | |
| Oakville High School | - | Junior | - | 0 | |
| Oakwood Middle School | - | Junior | - | 0 | |
| Oberlin Magnet Middle School | - | Junior | Large | 0 | |
| Oberlin Magnet Middle School | - | Junior | Small | 0 | |
| Obion County Central High School | - | Varsity | - | 0 | |
| OC All Stars | L3 | Junior | Small | 0 | |
