| Acronym | Definition |
|---|
| MDAA➣Missile Defense Advocacy Alliance |
| MDAA➣Massachusetts District Attorneys Association |
| MDAA➣Minnesota Darkhouse and Angling Association (est. 1986) |
| MDAA➣Mutual Defense Assistance Act |
| MDAA➣Minnesota Dental Assistants Association |
| MDAA➣Mason Dixon Auto Auction (Greencastle, PA) |
| MDAA➣Misuse of Drugs Amendment Act (New Zealand) |