| MPTA | Main Propulsion Test Article 
| Others |
| MPTA | Manufacturing Production Technology Academy
| Others |
| MPTA | Mechanical Power Transmission Association
| Others |
| MPTA | Memorial Pediatric Therapy Associates
| Others |
| MPTA | Michigan Physical Therapy Association
| Others |
| MPTA | Michigan Public Transit Association
| Others |
| MPTA | Minnesota Professional Towing Association
| Others |
| MPTA | Minnesota Public Television Association
| Others |
| MPTA | Minnesota Public Transit Association
| Others |
| MPTA | Mississippi Physical Therapy Association
| Others |
| MPTA | Missouri Physical Therapy Association
| Others |
| MPTA | Missouri Public Transit Association
| Others |
| MPTA | Multipurpose Trade Agreements
| Others |