| Acronym | Definition |
|---|
| MWRA➣Massachusetts Water Resources Authority |
| MWRA➣Married Women of Reproductive Age |
| MWRA➣Mid-West Regional Authority (Ireland) |
| MWRA➣Morale, Welfare and Recreation Association (District of Columbia National Guard) |
| MWRA➣Maryland Wildlife Rehabilitators Association (Pasadena, MD) |
| MWRA➣Midwest Whippet Racing Association |
| MWRA➣Medical Waste Regulatory Act (Michigan) |
| MWRA➣Mississippi Water Resources Association |
| MWRA➣Minnesota Working Rottweiler Association |
| MWRA➣Maryland Washington Racquetball Association |
| MWRA➣Mini-Wedge Racing Association |
| MWRA➣Mighty Wonderful Repeater Association (Los Angeles, California amateur radio group) |
| MWRA➣Midwest Relocation Alliance |