| 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) |