| Acronym | Definition |
|---|
| MCDN➣malariacontrol.net (volunteer computing project) |
| MCDN➣MicroCellular Data Network (Ricochet wireless cellular internet service) |
| MCDN➣Meridian Customer Defined Network |
| MCDN➣Marine Corps Data Network |
| MCDN➣Malopolskiego Centrum Doskonalenia Nauczycieli (Polish: Malopolskiego Teacher Training Center) |