| Abbreviation | Definition |
|---|---|
| MPGA | Master Plumbers and Gasfitters Association |
| MPGA | Metropolitan Public Gardens Association |
| MPHA | Maine Public Health Association |
| MPHA | Massachusetts Public Health Association |
| MPHA | McMaster Public Health Association |
| MPHA | Michigan Public Health Association |
| MPHA | Minnesota Paint Horse Association |
| MPHA | Minnesota Public Health Association |
| MPHA | Mississippi Public Health Association |
| MPHA | Missouri Public Health Association |
| MPHA | Montana Public Health Association |
| MPHA | Mountain Pleasure Horse Association |
| MPIDA | Meat Products of India Dealers Association |
| MPMA | Montford Point Marine Association |
| MPOA | Macomb Property Owners Association |
| MPOA | Malaysian Palm Oil Association |
| MPOA | Master Property Owners Association |
| MPOA | Missouri peace Officers Association |
| MPOA | Montclair Property Owners Association |
| MPPA | Maryland Public Purchasing Association |