| Acronym | Definition |
|---|
| MCR | My Chemical Romance (band) |
| MCR | Minimum Capital Requirement |
| MCR | Minimum Cell Rate |
| MCR | Middle Common Room (UK universities) |
| MCR | Multivariate Curve Resolution (spectral resolution technique) |
| MCR | Magnetic Card Reader |
| MCR | Memory Card Reader |
| MCR | Main Control Room (nuclear power) |
| MCR | Master Control Room |
| MCR | Masters of Corporate Real Estate |
| MCR | Manchester, England (airport code) |
| MCR | Metabolic Clearance Rate |
| MCR | Maximum Continuous Rating |
| MCR | MATLAB Component Runtime |
| MCR | Melanocortin Receptor |
| MCR | Master of Corporate Real Estate |
| MCR | Mutation Cluster Region |
| MCR | Medical Center of the Rockies (Loveland, CO) |
| MCR | Microcirculation |
| MCR | Minimum Course Requirements |
| MCR | Middle Combination Room (UK universities) |
| MCR | Medical Care Research and Review |
| MCR | Master Control Relay |
| MCR | Management Control Review |
| MCR | Mutual Climatic Range (mathematical method for reconstructing palaeoclimates) |
| MCR | Medical Cost Ratio (managed care industry) |
| MCR | Mission Control Room |
| MCR | Mid Course Review |
| MCR | Machinery Control Room (ships) |
| MCR | Management Consulting & Research, Inc. |
| MCR | Missouri Cancer Registry |
| MCR | Movement des Citoyens pour la Republique (French: Citizen and Republican Movement) |
| MCR | Main Conference Room |
| MCR | Mobile Control Room |
| MCR | Molded Carrier Ring |
| MCR | Message Completion Rate |
| MCR | Magnetic Character Reader |
| MCR | Master Change Record |
| MCR | Magnetic Character Recognition |
| MCR | Mission Confirmation Review (NASA) |
| MCR | Maricopa County Recorder (Arizona newspaper) |
| MCR | Minimum Creep Rate |
| MCR | Military Civil Relations |
| MCR | Military Compact Reactor |
| MCR | Multiple Chip Rate |
| MCR | Manual Change Release |
| MCR | Manpower Change Request |
| MCR | Manual Change Request |
| MCR | Master Control Routine |
| MCR | Manufacturing Change Request |
| MCR | Microcompact Range |
| MCR | Military Communications Requirement |
| MCR | Materials Control Requirement |
| MCR | Manual Contract Requirement |
| MCR | Magnetic Cartridge Recorder |
| MCR | Maximum Continuous Revolution (ship engines) |
| MCR | Motion-Compensated Reconstruction (digital television) |
| MCR | Microprocessor Clock Receiver (AT&T) |
| MCR | Multi-Channel Recorder |
| MCR | Multi-Command Regulation |
| MCR | Mobile Cellular Radio |
| MCR | Mission Computer Replacement |
| MCR | Material Change Request |
| MCR | Maintenance Control Report |
| MCR | Memisa-Cordaid |
| MCR | Motor Control Room |
| MCR | Modified Cash Refund (pension feature) |
| MCR | Master Control Record System |
| MCR | Milestone Concurrence Review |
| MCR | Military Contract Requirement(s) |
| MCR | Material Conformance Report |
| MCR | Multi-Country Region |
| MCR | Map of Canada Reference (number) |
| MCR | Marcellin College Randwick (Randwick NSW, Australia) |
| MCR | Material Condition Review |
| MCR | Marcellin College Randwick |
| MCR | Master Change Request |
| MCR | Mobilization Contracting Requirement |
| MCR | Modular Cellular Radio |
| MCR | Mission Capability Requirements |
| MCR | Monitor Control Routines |
| MCR | Multiple Channel Reservation |
| MCR | Medical Cost Remedy, Inc. |