| Acronym | Definition |
|---|
| MCAR | Missing Completely At Random |
| MCAR | Military Construction, Army Reserve |
| MCAR | Material Corrective Action Report (quality) |
| MCAR | Modified Car and Rally (automotive show) |
| MCAR | Marine Corps Air Station |
| MCAR | Machine Check Analysis and Recording |
| MCAR | Multiple Channel Aural Reception |
| MCAR | Multichannel Acoustic Relay |
| MCAR | Malaysian Civil Aviation Regulation (Malaysia) |
| MCAR | Mobile Cosmetic Auto Repairs |
| MCAR | Model Civil Aviation Regulations |
