MCIR
| Acronym | Definition |
|---|---|
| MCIR | Michigan Care Improvement Registry (immunization information; est. 1998) |
| MCIR | Michigan Childhood Immunization Registry |
| MCIR | Maine Center for Integrated Rehabilitation (brain injury facility) |
| MCIR | Materiel Change Information Report |
| MCIR | McHenry County Independent Riders (Illinois motorcycle club) |