| MDAR | Malfunction Detection Analysis Recording 
| Others |
| MDAR | Malfunction Detection, Analysis, and Recording
| Others |
| MDAR | Mass Discrepancy Acceleration Relation
| Others |
| MDAR | Massachusetts Department of Agricultural Resources
| Others |
| MDAR | Massachusetts Dept of Agricultural Resources
| Others |
| MDAR | Materials Design Analysis Reporting
| Others |
| MDAR | Mesh Defect Area Ratio
| Others |
| MDAR | Miniature Directional Acoustic Receiver
| Others |
| MDAR | Mobile Data Archive and Retrieval
| Others |
| MDAR | Multi Department Administrative Rule
| Others |