| Acronym | Meaning |
| MCT | Corrective Maintenance Time |
| MCT | Maintenance Continuation Training |
| MCT | Management Control Team |
| MCT | Marine Combat Training |
| MCT | Maritime Counter Terrorism |
| MCT | Material Control Tracking |
| MCT | Maximum Continuous Thrust |
| MCT | Mean Correct Time |
| MCT | Mean Corrective Maintenance Time |
| MCT | Mechanical Comprehension Test (various organizations) |
| MCT | Message Character Count |
| MCT | Military Camera Team (Australia) |
| MCT | Military Combat Training |
| MCT | Minimum Competency Test (student testing) |
| MCT | Ministério da Ciência e Tecnologia (Brazil) |
| MCT | Mission Commander's Terminal |
| MCT | Mobile Collection Team |
| MCT | Mobile Command Team |
| MCT | Mobile Crisis Team (various locations) |
| MCT | Movement Control Team |
| MCT | Multi-Cable Transit |
| MCT | Multi-Communication Transaction (US NSA) |