| MDAA | Massachusetts Dental Assistants Association 
| Others |
| MDAA | Massachusetts District Attorneys Association
| Others |
| MDAA | Michigan Dental Assistants Association
| Others |
| MDAA | Michigan's Design Awards Association
| Others |
| MDAA | Microsoft Dynamics Academic Alliance
| Others |
| MDAA | Missile Defense Advocacy Alliance
| Others |
| MDAA | Missouri Dental Assistant Association
| Others |
| MDAA | Missouri Dental Assistants Association
| Others |
| MDAA | Modern Desktop Administrator Associate
| Others |
| MDAA | Montana Dance Arts Association
| Others |
| MDAA | Multicultural Disability Advocacy Association
| Others |
| MDAA | Mutual Defense Assistance Act
| Others |