| Rank | Abbreviation | Meaning |
|---|
| ***** | MGDC | Marine Geology Data Center
| |
| ***** | MGDC | Mines and Geology Division California
| |
| ***** | MGDC | Masters Gamblers Dog of Canada
| |
| **** | MGDC | Mahatma Gandhi-Doerenkamp Center
| |
| **** | MGDC | manila global delivery center
| |
| **** | MGDC | Metropolitan Growth and Development Corporation
| |
| **** | MGDC | Media Gateway Device Control
| |
| **** | MGDC | Martha Graham Dance Company
| |
| **** | MGDC | Miscellaneous Goods Development Committee
| |
| **** | MGDC | Member of the Graphic Designers of Canada
| |
| **** | MGDC | Mobile Game Developers Community
| |
| *** | MGDC | Minnesota Geographic Data Clearinghouse
| |
| ** | MGDC | MEGAGOLD CORP.
| |
| ** | MGDC | Montana Geospatial Data Clearnin
| |