| Acronym | Definition |
|---|
| MGWA➣Middle Grades Writing Assessment |
| MGWA➣Metropolitan Golf Writers Association (Elmsford, NY) |
| MGWA➣Minnesota Ground Water Association (volunteer organization; White Bear Lake, MN) |
| MGWA➣Montana Game Wardens Association (Helena, MT) |
| MGWA➣Michigan Ground Water Association, Inc. |
| MGWA➣McGillivray's Warbler (bird species Oporornis tolmiei) |