| MPEA | Menlo Park Education Association 
| Others |
| MPEA | Meridian Police Employee Association
| Others |
| MPEA | Metropolitan Pier and Exposition Authority
| Others |
| MPEA | Middle Patuxent Environmental Area
| Others |
| MPEA | Minnesota Public Employees Association
| Others |
| MPEA | Missouri Professors of Education Administration
| Others |
| MPEA | Missouri Professors of Educational Administration
| Others |
| MPEA | Montana Public Employees Association
| Others |
| MPEA | Motor Parts and Equipment Association
| Others |
| MPEA | Mt Pleasant Education Association
| Others |