| MFDC | Mackay Family Day Care 
| Others |
| MFDC | Main Feeds of Dairy Cattle
| Others |
| MFDC | Marine and Freshwater Discovery Centre
| Others |
| MFDC | Math Fluency Data Collaborative
| Others |
| MFDC | Mauritius Film Development Corporation
| Others |
| MFDC | Mean Functional Diameter of Capillaries
| Others |
| MFDC | Mechanicsville Free Dental Clinic
| Others |
| MFDC | Medium Frequency Direct Current
| Others |
| MFDC | Mexican Folkloric Dance Company of Chicago
| Others |
| MFDC | Micro Focus Desktop Containers
| Others |
| MFDC | Mid Frequency Direct Current
| Others |
| MFDC | Mid-Florida Dalmatian Club
| Others |
| MFDC | Midcoast Family Day Care
| Others |
| MFDC | Mouvement des Forces Démocratiques de Casamance (Democratic Forces of Casamance Movement, Senegal)
| Others |
| MFDC | Multi-Functional Data Collector
| Others |