| MCU | City of Gold Coast 
| Others |
| MCU | Machines Computations and Universality
| Others |
| MCU | Mackie Control Universal
| Others |
| MCU | Magical Crimes Unit
| Others |
| MCU | Main Control Unit
| Others |
| MCU | Maintenance Communications Unit
| Others |
| MCU | Maintenance Control Unit
| Others |
| MCU | Major Coloring Units
| Others |
| MCU | Major Crime Unit
| Others |
| MCU | Malt Color Units
| Others |
| MCU | Management Control Unit
| Others |
| MCU | Mancave Ultras
| Others |
| MCU | Manual Control Unit
| Others |
| MCU | Marine Corps University
| Others |
| MCU | Marvel Car Universe
| Others |
| MCU | Marvel Cinematic Universe
| Others |
| MCU | Marvel Cinimatic Universe
| Others |
| MCU | Marvel Comics Universe
| Others |
| MCU | Marymount California University
| Others |
| MCU | Master Control Unit
| Others |
| MCU | Mastery Check Up
| Others |
| MCU | Mcpherson University, Seriki Sotayo, Ajebo
| Others |
| MCU | Meadows Credit Union
| Others |
| MCU | Mechanical Condition Unknown
| Others |
| MCU | Media Control Unit
| Others |
| MCU | Media Converter Unit
| Others |
| MCU | Medical Centre of Washington
| Others |
| MCU | Medium Close Up
| Others |
| MCU | Memory Control Unit
| Others |
| MCU | Memory Controller Unit
| Others |
| MCU | Merry Christmas to U
| Others |
| MCU | Metallic Channel Unit
| Others |
| MCU | Metered Call Unit
| Others |
| MCU | Metro Credit Union
| Others |
| MCU | Metropolitan Congregations United
| Others |
| MCU | Miami Christian University
| Others |
| MCU | Micro Cellular Urethane
| Others |
| MCU | Micro Code Update
| Others |
| MCU | Micro Computer Unit
| Others |
| MCU | Micro Controller Unit
| Others |
| MCU | microcontroller unit
| Others |
| MCU | Microprocessor Control Unit
| Others |
| MCU | Micturating Cysto Urethrogram
| Others |
| MCU | Military Call-Up
| Others |
| MCU | Milk Clotting Units
| Others |
| MCU | Millbury Credit Union
| Others |
| MCU | Minecraft Ultimate
| Others |
| MCU | Mineral Collectors of Utah
| Others |
| MCU | Ming Chuan University
| Others |
| MCU | Mission Computer Upgrade
| Others |
| MCU | Mission Control Unit
| Others |
| MCU | Missouri Credit Union
| Others |
| MCU | Mitochondrial Calcium Uniporter
| Others |
| MCU | Mixture Control Unit
| Others |
| MCU | Mobile Calibration Unit
| Others |
| MCU | Mobile Control Unit
| Others |
| MCU | Modern Chesterfield Upholdstry
| Others |
| MCU | Modern Churchpeoples' Union
| Others |
| MCU | Moisture Cured Urethane
| Others |
| MCU | Monterey Credit Union
| Others |
| MCU | Montlucon, France
| Others |
| MCU | Motion Control Unit
| Others |
| MCU | Motor Control Unit
| Others |
| MCU | Multi Channel Unit
| Others |
| MCU | Multi Chip Unit
| Others |
| MCU | Multi Connection Unit
| Others |
| MCU | Multi-cast Conferencing Unit
| Others |
| MCU | Multii Cervical Ushg
| Others |
| MCU | Multipoint Conference Unit
| Others |
| MCU | Multipoint Conferencing Unit
| Others |
| MCU | Multipoint Control Unit
| Others |
| MCU | Multiway Control Unit
| Others |
| MCU | Municipal Credit Union
| Others |
| MCU | My Chemical Uomance
| Others |
| MCU | Myanmar Consumers Union
| Others |