| Abbreviation | Definition |
|---|---|
| MDAI | Manitoba Darts Association Inc |
| MDAL | Media Design Associates Ltd |
| MDC | Madison Development Corporation |
| MDC | Material Development Corporation |
| MDC | McDonnell Douglas Corporation |
| MDC | Members Development Company |
| MDC | Michigan Drywall And Ceiling |
| MDC | Mizel Development Corporation |
| MDC | Morphos Developer Connection |
| MDCB | Management Development Consultancy Bureau |
| MDD | Making Digits Dance |
| MDD | McDonnell Douglas |
| MDD | Millennium Dawn Designs |
| MDE | Multimedia Delivery Europe |
| MDEC | Malaysia Digital Economy Corporation |
| MDEV | Mobile Development Limitada |
| MDF | Manky Designer Froth |
| MDFC | McDonnell Douglas Finance Corporation |
| MDFC | Media4 Corp. |
| MDFI | Maguindanao Development Foundation Inc |