| MB Elite | L2 | Junior | Small | 0 | | |
| MB Elite | L1 | Youth | Medium | 0 | | |
| MB Elite Cheer | L1 | Youth | Medium | 0 | | |
| MCA Allstars | - | Senior | - | 0 | | |
| MCA Allstars | - | Mini | - | 0 | | |
| MCA Allstars | - | Junior | Small | 0 | | |
| McAdory Middle School | - | Junior | - | 0 | | |
| McAlester Stars | L3 | Senior | - | 0 | | |
| McAlester Stars | - | Senior | Small | 0 | | |
| McAllen High School | - | Varsity | Large | 0 | | |
| McAllen High School | - | Varsity | Large | 0 | | |
| McAllen Memorial High School | - | Varsity | Medium | 0 | | |
| McAllen Memorial High School | - | Varsity | Medium | 0 | | |
| McBrayer Elementary | - | Open | - | 0 | | |
| McBrayer Elementary | - | Open | - | 0 | | |
| MCC Allstars | L3 | Senior | Small | 0 | | |
| MCC Allstars | - | Senior | Medium | 0 | | |
| MCC Allstars | - | Youth | Small | 0 | | |
| MCC Allstars | L1 | Youth | Small | 0 | | |
| MCC Allstars | L1 | Tiny | - | 0 | | |
| MCC Allstars | - | Senior | Small | 0 | | |
| MCC Allstars | L4 | Senior | - | 0 | | |
| MCC Allstars | L4 | - | - | 0 | | |
| MCC Allstars | L2 | Junior | Small | 0 | | |
| MCC Allstars | L1 | Junior | Small | 0 | | |
| MCC Allstars | L4 | Junior | - | 0 | | |
| MCC Allstars | L1 | Tiny | - | 0 | | |
| MCC Allstars | - | Junior | Small | 0 | | |
| MCC Allstars | L2.1 | Junior | - | 0 | | |
| MCC Allstars | L2 | Youth | - | 0 | | |
| MCC Allstars | L4 | Youth | - | 0 | | |
| MCC Allstars | L6 | Senior | - | 0 | | |
| MCC Allstars | L6 | Open | - | 0 | | |
| MCC Allstars | L2.2 | Youth | - | 0 | | |
| MCC Allstars | L4 | Youth | - | 0 | | |
| MCC Allstars | L6 | Limited | XSmall | 0 | | |
| MCC Allstars | - | Youth | Small | 0 | | |
| MCC Allstars | - | Tiny | - | 0 | | |
| MCC Allstars | L3 | Junior | - | 0 | | |
| MCC Allstars | L1.1 | Youth | - | 0 | | |
| mcc bunny hop | L1 | Junior | - | 0 | | |
| MCC Schönefeld e.V. | - | - | - | 0 | | |
| MCC Schönefeld e.V. | L1 | Youth | Small | 0 | | |
| McCollum High School | - | Varsity | - | 0 | | |
| McCracken County High School | - | Varsity | Large | 0 | | |
| McCracken County High School | - | Varsity | Medium | 0 | | |
| McCracken County High School | - | Varsity | Medium | 0 | | |
| McCracken County High School | - | Varsity | Medium | 0 | | |
| McCracken County High School | - | Varsity | Medium | 0 | | |
| McCreary Central High School | - | Varsity | Small | 0 | | |
| McCreary County Middle | - | Junior | Large | 0 | | |
| McDonogh 35 High School | - | Varsity | - | 0 | | |
| McDowell High School | - | Junior | - | 0 | | |
| McDowell High School | - | Varsity | Large | 0 | | |
| McDowell High School | - | Varsity | Medium | 0 | | |
| McDowell High School | - | Varsity | Medium | 0 | | |
| McDowell High School | - | Varsity | Medium | 0 | | |
| McEwen High School | - | Varsity | Small | 0 | | |
| McGuffey High School | - | Varsity | Medium | 0 | | |
| McGuffey High School | - | Varsity | Medium | 0 | | |
| McIntosh High School | - | - | - | 0 | | |
| McKee/Staten Island Tech | - | - | - | 0 | | |
| McKeel Academy | - | Varsity | Small | 0 | | |
| McKendree University | - | - | Small | 0 | | |
| McKendree University | - | - | Small | 0 | | |
| McKenna - Palmyra High School | - | Senior | - | 0 | | |
| McKenzie High School | - | Varsity | Small | 0 | | |
| McKenzie High School | - | Varsity | - | 0 | | |
| McKinney Christian Academy | - | Varsity | Small | 0 | | |
| McKinney High School | - | Varsity | Large | 0 | | |
| McKinney High School | - | Varsity | - | 0 | | |
| McKinney High School | - | Varsity | Small | 0 | | |
| McLaurin High School | - | Varsity | Medium | 0 | | |
| McLaurin High School | - | Varsity | - | 0 | | |
| McLaurin High School | - | Varsity | - | 0 | | |
| McLaurin High School | - | Varsity | Small | 0 | | |
| McLaurin JH School | - | Junior | - | 0 | | |
| McLaurin JH School | - | Junior | Small | 0 | | |
| McLaurin JH School | - | Junior | Small | 0 | | |
| McLean County High School | - | Varsity | Medium | 0 | | |
| McLean County High School | - | Varsity | Large | 0 | | |
| McLean County High School | - | Varsity | Medium | 0 | | |
| McLean County High School | - | Varsity | Medium | 0 | | |
| McLean County High School | - | Varsity | - | 0 | | |
| McLean County High School | - | Varsity | - | 0 | | |
| McLennan Community College | - | Junior | - | 0 | | |
| McMaster University | - | - | - | 0 | | |
| McMinn County High School | - | Varsity | Small | 0 | | |
| McMinn County High School | - | Varsity | Small | 0 | | |
| McMinnville High School | - | Varsity | Medium | 0 | | |
| McMinnville High School | - | Varsity | - | 0 | | |
| McMinnville High School | - | Varsity | - | 0 | | |
| McMinnville High School | - | Varsity | - | 0 | | |
| McMinnville High School | - | - | Large | 0 | | |
| McNeese State University | - | - | - | 0 | | |
| McNeil High School | - | Varsity | Medium | 0 | | |
| McNeil High School | - | Varsity | Large | 0 | | |
| MCPD Cheer and Dance | - | - | - | 0 | | |
| MCPD Cheer and Dance | - | - | - | 0 | | |
| McPherson College | - | - | - | 0 | | |