| MDCA | Main Distribution Control Assembly
| Others |
| MDCA | Manchester and District Cricket Association
| Others |
| MDCA | Medical Device Companies Analysis
| Others |
| MDCA | Miami Dade Collier Airport
| Others |
| MDCA | Miami Dade County Auditorium
| Others |
| MDCA | Microsoft Distributed Component Architecture
| Others |
| MDCA | Midwest Decoy Collectors Association
| Others |
| MDCA | Millennium Digital Commerce Act
| Others |
| MDCA | Modified Dynamic Conformal Arc
| Others |
| MDCA | Montpelier Downtown Community Association
| Others |
| MDCA | Mount Dora Christian Academy
| Others |