| McKinney High School | - | Junior Varsity | Medium | 0 | | |
| McLean County High School | - | Varsity | Large | 0 | | |
| McMinnville High School | - | - | Large | 0 | | |
| McNeil High School | - | Varsity | Large | 0 | | |
| MCPD Cheer and Dance | L3 | U16 | Large | 0 | | |
| Mead High School | - | Varsity | Large | 0 | | |
| Meade County High School | - | Varsity | Large | 0 | | |
| Meadowlands Starz | L4 | - | - | 0 | | |
| Meadowlands Starz | L2 | - | - | 0 | | |
| Medellin All Stars | L5 | International Open | Large | 0 | | |
| Melissa High School | - | Varsity | Large | 0 | | |
| Memphis Elite | L3 | Senior | Large | 0 | | |
| Mepham High School | - | Varsity | Small | 0 | | |
| Mepham High School | - | Varsity | Large | 0 | | |
| Mesa High School | - | - | Large | 0 | | |
| Mesa High School | - | - | Large | 0 | | |
| Metcalfe County High School | - | Varsity | Large | 0 | | |
| MGA Cheer Extreme | L6 | Senior | Large | 0 | | |
| Miami Elite | L5 | Senior | Large | 0 | | |
| Miamisburg High School | - | Varsity | Large | 0 | | |
| Middle Tenn Christian High School | - | Varsity | Large | 0 | | |
| Middle Tenn Christian High School | - | Junior | - | 0 | | |
| Middle Tenn Christian High School | - | Varsity | Large | 0 | | |
| Middle Tenn Christian High School | - | Varsity | Large | 0 | | |
| Middle TN Christian School | - | Junior | Small | 0 | | |
| Middle TN Christian School | - | Junior | - | 0 | | |
| MIDTN Cheer Ignite | L2 | - | - | 0 | | |
| MIDTN Cheer Ignite | L1 | - | Large | 0 | | |
| Midwest Cheer Elite | L6 | Senior | Small | 0 | | |
| Midwest Cheer Elite | L3 | Youth | - | 0 | | |
| Midwest Cheer Elite (Main) | L5 | Senior | Large | 0 | | |
| Milford High School | - | Varsity | Large | 0 | | |
| Milford High School | - | Varsity | Large | 0 | | |
| Milford High School | - | Varsity | Large | 0 | | |
| Mill Valley High School | - | Varsity | Large | 0 | | |
| Millard North High School | - | Varsity | Small | 0 | | |
| Millennium All Stars | L5 | International Open | Large | 0 | | |
| Millikin University | - | Open | Large | 0 | | |
| Mills Park Middle School | - | Junior | Small | 0 | | |
| Milpitas High School | - | Varsity | Large | 0 | | |
| Mira Costa High School | - | Varsity | Large | 0 | | |
| Mira Costa High School | - | - | - | 0 | | |
| Mize Attendance Center | - | Varsity | - | 0 | | |
| 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 | - | - | Small | 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 | Large | 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 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 | Medium | 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 | Small | 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 | U16 | Large | 0 | | |
| Muhlenberg High School | - | Varsity | Medium | 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 | L1 | - | - | 0 | | |
| Myers Park High School | - | Varsity | Large | 0 | | |
| Napa High School | - | - | Large | 0 | | |
| Nature Coast Tech High School | - | Varsity | Large | 0 | | |
| Navarro College | - | Junior | - | 0 | | |
| Nazareth Area High School | - | Junior | Large | 0 | | |
| Nazareth Area High School | - | Varsity | Large | 0 | | |
| Nazareth Area High School | - | Varsity | Large | 0 | | |
| Nease High School | - | Varsity | Large | 0 | | |
| Nease High School | - | Varsity | Small | 0 | | |
| Needville High School | - | Varsity | Large | 0 | | |
| Needville High School | - | Varsity | Large | 0 | | |