| Acronym | Definition |
|---|
| MWA | Mystery Writers of America |
| MWA | Ministry of Women's Affairs (New Zealand) |
| MWA | Millennium Wave Advisors, LLC |
| MWA | Montana Wilderness Association |
| MWa | Megawatt |
| MWA | Metropolitan Waterworks Authority |
| MWA | Modern Woodmen of America (a fraternal life insurance society) |
| MWA | Malaysian Water Association |
| MWA | Maryland Writers Association |
| MWA | Minnesota Waterfowl Association |
| MWA | Marion, IL, USA (Airport Code) |
| MWA | Mobile Wireless Accessibility |
| MWA | Macon Water Authority (Macon, GA) |
| MWA | Missouri Whitewater Association |
| MWA | Maintenance Work Area |
| MWA | Museum of Wisconsin Art |
| MWA | Momentum-Wheel Assembly |
| MWA | Maine Windjammer Association |
| MWA | Mountain Wave Activity |
| MWA | Message Waiting Allowed (telephone) |
| MWA | Mid Water Arch (shipping, seabed buoyant support structure) |
| MWA | Medical Wellness Association |
| MWA | Moving Weighted Average |
| MWA | Michigan Wrestling Association |
| MWA | Marion, Williamson County Airport |
| MWA | Morale and Welfare Activities |
| MWA | Military Working Animals |
| MWA | Medicine Wheel Alliance |
| MWA | Married Women's Association |
| MWA | Monongalia Wireless Association |
| MWA | Meteorological Watch Advisory |
| MWA | Missouri Watershed Association |
| MWA | Millennium Wrestling Association |
| MWA | Minnesota Wolf Alliance |
| MWA | Manufacturing Work Authority |
| MWA | Maintenance Walk-Around |
| MWA | Management Work Authorization |
| MWA | Multicast Wavelength Assignment |
| MWA | Memorandum of Working Agreement |
| MWA | Making Waves Academy (Richmond, CA) |
| MWA | Michigan Wolfdog Association |
| MWA | Munitions of War Act (British) |
| MWA | Midwest Aviation, Inc. |
| MWA | Morrisville Wrestling Alliance |
| MWA | Megunticook Watershed Association (Camden, ME) |
| MWA | Mobile Warehouse Application |