| MCA | Manufacturing Chemist Association | - | Computer Acronyms(common) |
| MCA | Middle Cerebral Artery | - | Computer Acronyms(common) |
| MCA | Micro Channel Architecture | - | Computer and Internet |
| MCA | Micro Channel Architecture | - | Human Genome |
| MCA | Master ControlAssembly | - | Organizations |
| MCA | Maximum Crossing Altitude | - | Organizations |
| MCA | Monitoring And Control Assembly | - | Organizations |
| MCA | MotorControlAssembly | - | Organizations |
| MCA | Multichannel Analyzer | - | Organizations |
| MCA | Maritime And Coastguard Agency | - | SMS Chat and Text |
| MCA | Micro Channel Architecture - MultiChannel Analyzer | - | Astronomy |
| MCA | Moist Convective Adjustment | - | Business and Finance |
| MCA | Moist Convective Adjustment | - | Business and Finance |
| MCA | Micro Channel Architecture | - | Business and Finance |
| MCA | Manufacturing Chemists Association | - | Business and Finance |
