| Abbreviation | Definition |
|---|---|
| MCSW | Mcconnell Chase Software Works |
| MCT | Microsoft Certified Trainer |
| MCTS | Microsoft Certified Technology Specialist |
| MCV | Message Center Viewer |
| MCWG | Multimedia Coding and Watermarking Group |
| MD | Manufactured Diagnostics |
| MD | Multithreaded DLL |
| MDA | Media Development Authority |
| MDAC | Microsoft Data Access Component |
| MDAC | Microsoft Data Access Components |
| MDAC | Microsoft® Data Access Components |
| MDAO | Multidisciplinary Design Analysis and Optimization |
| MDAS | Marathon Data Analysis Software |
| MDB | Message-Driven Bean |
| MDB | Microsoft Access Database (file extension) |
| MDCE | Matlab Distributed Computing Engine |
| MDCM | Medical Doctors Coding Manual |
| MDCM | Microsoft Development Composition Module |
| MDCT | Modified Discrete Cosine Transform |
| MDD | Microsoft Dynamic Dependencies |