MMDI
| Acronym | Definition |
|---|---|
| MMDI | Metropolitan Model Deployment Initiative |
| MMDI | Minnesota Medical Development, Inc. |
| MMDI | MacLaren McCann Direct and Interactive (marketing; Canada) |
| MMDI | Mental Muscle Diagram Indicator (personality test) |
| MMDI | Millennium Mold Design, Inc. (Ringwood, IL) |