| Acronym | Definition |
|---|
| MGSA➣Mason Gross School of the Arts (New Brunswick, NJ) |
| MGSA➣Melanoma Growth Stimulatory Activity (antigen) |
| MGSA➣Modern Greek Studies Association |
| MGSA➣Modified Gram-Schmidt Algorithm |
| MGSA➣Mansfield Girls Softball Association (Texas) |
| MGSA➣Maryland Ghost & Spirit Association |
| MGSA➣Military General Supply Agency |
| MGSA➣Mid Georgia Software Associates, LLC |