MPAI
| Acronym | Definition |
|---|---|
| MPAI | Most People Are Idiots |
| MPAI | Mayo-Portland Adaptability Inventory (head trauma rehabilitation) |
| MPAI | Music Publishers Association of Ireland (Dublin, Ireland) |
| MPAI | Maximum Permissible Annual Intake |
| MPAI | Marshall Plan Advisors, Inc. (Shaker Heights, OH) |