| MDG | Marginally Deformed Grav
| Others |
| MDG | Market Development Grant
| Others |
| MDG | Market Development Group
| Others |
| MDG | Marketing Design Group
| Others |
| MDG | Master Data Governance
| Others |
| MDG | Matthew D. Guarnere, recording artist
| Others |
| MDG | Medical Development Group
| Others |
| MDG | Medicals Direct Group
| Others |
| MDG | Medium Duty Griddle
| Others |
| MDG | Message Development Group
| Others |
| MDG | Meteor Development Group
| Others |
| MDG | Michaud-Duffy Group, L.L.P.
| Others |
| MDG | Microsoft Devices Group
| Others |
| MDG | Milieu De Gamme
| Others |
| MDG | Millenium Development Goal
| Others |
| MDG | Millennium Development Goal
| Others |
| MDG | Millennium Development Goals
| Others |
| MDG | Minimum Delay Generator
| Others |
| MDG | Mobile Data Gateway
| Others |
| MDG | Model Driven Generation
| Others |
| MDG | Modern Day Gent
| Others |
| MDG | Moisture Density Gauge
| Others |
| MDG | Mother Daughter and Granddaughter
| Others |
| MDG | Mouton De Gruyter
| Others |
| MDG | Multimedia Development Group
| Others |
| MDG | Museum Development Grant
| Others |
| MDG | Musikproduktion Dabringhaus und Grimm
| Others |