| Acronym | Definition |
|---|
| MGIA➣Michigan Green Industry Association |
| MGIA➣Midwest Gang Investigators Association (est .1987; Omaha, NE) |
| MGIA➣My Getaway In Audio (band) |
| MGIA➣Multi-Grid Iterative Approach |
| MGIA➣Municipal Government Investment Associates, Inc. (California) |
| MGIA➣Modified General Inversion Algorithm |