| Mizutori Sports Club | L7 | International Open | Large | 0 | |
| Modern American Cheer | L1 | Youth | Large | 0 | |
| Modern American Cheer | L2 | Junior | Small | 0 | |
| Modern American Cheer | L3 | Senior | Large | 0 | |
| Monsignor Edward Pace High School | - | Varsity | Large | 0 | |
| Monsignor Edward Pace High School | - | Varsity | Large | 0 | |
| Monsignor Edward Pace High School | - | Varsity | Large | 0 | |
| Montclair State University | - | - | Large | 0 | |
| Montgomery County High School | - | Varsity | Large | 0 | |
| Montgomery High School (NJ) | - | Varsity | Large | 0 | |
| Montoursville Area High School | - | Varsity | Large | 0 | |
| Montoursville Area High School | - | - | - | 0 | |
| Moon Valley High School | - | Varsity | Large | 0 | |
| Mooresville High School | - | Varsity | - | 0 | |
| Morgan High School | - | - | Large | 0 | |
| Morgan High School | - | Varsity | Large | 0 | |
| Moses Lake High School | - | - | - | 0 | |
| MOTYFCL | L4 | - | Large | 0 | |
| Mount Carmel Academy | - | Varsity | Large | 0 | |
| Mount Carmel Academy | - | Varsity | Large | 0 | |
| Mount Carmel Academy | - | Varsity | Large | 0 | |
| Mount Juliet High School | - | Varsity | Medium | 0 | |
| Mount Laurel Cheer | L2 | - | Large | 0 | |
| Mount Olive High School | - | Varsity | Large | 0 | |
| Mount Pleasant High School | - | Varsity | - | 0 | |
| Mount Si High School | - | Varsity | Medium | 0 | |
| Mount Si High School | - | Varsity | - | 0 | |
| Mount Vernon High School | - | Junior | Large | 0 | |
| Mountain Ridge High School | - | Varsity | - | 0 | |
| Mountain View High School | - | Varsity | Large | 0 | |
| Mountain View High School | - | Junior | Large | 0 | |
| Mountain View High School | - | Varsity | Large | 0 | |
| Mountain View High School | - | - | - | 0 | |
| Mountain View High School | - | Junior | Large | 0 | |
| MPact Dance Studio | - | Senior | Large | 0 | |
| MPact Dance Studio | - | Senior | Large | 0 | |
| Mpvolts Academy | L6 | International Open | Large | 0 | |
| MRR Outlaws | L2 | - | - | 0 | |
| Mt. Blue Rec Cheering | L3 | - | Large | 0 | |
| MTV Braunschweig | L1 | - | Large | 0 | |
| MTV Braunschweig | L1 | U16 | Large | 0 | |
| Muhlenberg High School | - | Varsity | Medium | 0 | |
| Murrieta Mesa High School | - | - | Large | 0 | |
| Murrieta Mesa High School | - | Varsity | Large | 0 | |
| Murrieta Mesa High School | - | - | Large | 0 | |
| Murrieta Valley High School | - | Varsity | - | 0 | |
| Mustang High School | - | Varsity | Large | 0 | |
| Mustang High School | - | Varsity | Large | 0 | |
| MVAA | L2 | - | - | 0 | |
| MVAA | L1 | - | - | 0 | |
