| MDH | Maah Daah Hey 
| Others |
| MDH | Madeleine D'Houet
| Others |
| MDH | Magical Dynamic Hypnotic
| Others |
| MDH | Mahashian Di Haddi
| Others |
| MDH | Mahashian Di Hatti
| Others |
| MDH | Mahasya Di Hatti
| Others |
| MDH | Malate Dehydrogenase
| Others |
| MDH | Manila Doctors Hospital
| Others |
| MDH | Marek de Heus
| Others |
| MDH | Master of Dental Hygiene
| Others |
| MDH | McDonough District Hospital
| Others |
| MDH | Meas Development Holding
| Others |
| MDH | Menu Debug Hardware
| Others |
| MDH | Michael Deane Homes
| Others |
| MDH | Michigan Dance Heritage
| Others |
| MDH | Michigan Department of Health
| Others |
| MDH | Mid Digital Hair
| Others |
| MDH | Migration Data Host
| Others |
| MDH | Minimum Descent Height
| Others |
| MDH | Minnesota Department of Health
| Others |
| MDH | Missouri Digital Heritage
| Others |
| MDH | Modern Day Hippies
| Others |
| MDH | Month Date And Hour
| Others |
| MDH | Month Day And Hour
| Others |
| MDH | Month Day Hour
| Others |
| MDH | Month, Day, And Hour
| Others |
| MDH | Month-Day-Hour
| Others |
| MDH | Mount Dora High
| Others |
| MDH | Multi Dimensional and Hierarchical Database
| Others |
| MDH | Multi Domain Hosting
| Others |
| MDH | Multimedia Data Handling
| Others |
| MDH | Southern Illinois Airport, Carbondale, Illinois USA
| Others |