UMAS
| Acronym | Definition |
|---|---|
| UMAS | Upper Merion All Stars (cheerleading; Upper Merion, PA) |
| UMAS | United Mexican American Students (University of Colorado) |
| UMAS | Uniform Municipal Accounting System (Massachusetts and New Hampshire) |
| UMAS | Universitetssjukhuset Malmö Allmäna Sjukhus (hospital in Sweden) |
| UMAS | Universal Miniature Avionics System (UAVs) |