| Abbreviation | Definition |
|---|---|
| MYLC | Miss You Like Crazy |
| MYOB | Me, Your Other Brother! |
| MYOB | Mind Your Own Beeswax |
| MZ | More Zimmerman |
| MZR | Marvel Zombie Society |
| NAA | Never Abbreviate Again! |
| NAACP | National Association of Always Complaining People |
| NAACP | Negroes Against American Conservative Party |
| NAACP | Noisy Agitators Always Causing problems |
| NAAF | Nutty As A Fruitcake |
| NAB | Not About Broadcasting |
| NAC | Nerds of America Association |
| NAC | No Access Couture |
| NACA | Normal Auto Contingency Allegiance |
| NACF | Niles And Cc Forever |
| NACL | No Added Calcium Layers |
| NACOG | Nerf Advanced Combat Optical Gunsight |
| NACW | National Advisory Committee For Women |
| NACW | National Association of Career Women |
| NACW | National Association of Commissions for Women |