| UMSA | Ukrainian Medical Stomatological Academy 
| Others |
| UMSA | Undergraduate Mathematics Students Association
| Others |
| UMSA | Union of Malaysian Students in Auckland
| Others |
| UMSA | Unionville Minor Softball Association
| Others |
| UMSA | Universidad del Museo Social Argentino
| Others |
| UMSA | Universidad Mayor de San Andres
| Others |
| UMSA | Universities at Medway Students' Association
| Others |
| UMSA | University Medical Service Association
| Others |
| UMSA | University of Minnesota Sociological Association
| Others |
| UMSA | Upper Midwest Security Alliance
| Others |