| Acronym | Definition |
|---|
| MDCI➣Medical Action Industries Inc. (Hauppauge, NY) |
| MDCI➣Medical Device Consultants, Inc. |
| MDCI➣Multidiscipline Counterintelligence (US DoD) |
| MDCI➣Modern Digital Communications, Inc. (Canada) |
| MDCI➣Messianic Dance Camps International (Jewish organization) |
| MDCI➣Management Development Centre International Ltd. (various locations) |