| Acronym | Definition |
|---|
| MRRA➣Midcoast Regional Redevelopment Authority (Brunswick, ME) |
| MRRA➣Maine Resource Recovery Association |
| MRRA➣Military Retirement Reform Act (USA) |
| MRRA➣Migration and Refugee Assistance Act of 1962 |
| MRRA➣Minnesota Rifle and Revolver Association |
| MRRA➣Magnetic Resonance Radiologists Association |
| MRRA➣Minnesota Resource Recovery Association |
| MRRA➣Meramec River Recreation Association (Missouri) |
| MRRA➣Moose River Recreation Area |
| MRRA➣Merrimac River Rowing Association (Massachusetts) |
| MRRA➣Magnetic Resonance Research Accessories (est. 2009) |
| MRRA➣Maclear Ratepayers' and Residents' Association (South Africa) |
| MRRA➣Military Retirement Reduction Act |
| MRRA➣Mechanically Reconfigurable Reflector Antenna |
| MRRA➣Minnesota Road Race Academy |
| MRRA➣Municipal Rehabilitation and Recovery Act (Camden, New Jersey) |
| MRRA➣Maylands Ratepayers and Residents Association (Australia) |
| MRRA➣Management Reserve Right of Admission |