| Rank | Abbreviation | Meaning |
|---|
| ***** | UMSC | Universal Mobile Telecommunications System Mobile Switching Centre
| |
| **** | UMSC | USB (Universal Serial Bus) Mass Storage Class
| |
| **** | UMSC | UMTS Mobile Switching Center
| |
| ** | UMSC | University Medical Student Council
| |
| ** | UMSC | Universiti Malaya Specialist Centre
| |
| ** | UMSC | Unified Messaging Service Center
| |
| ** | UMSC | Upper Moreland Soccer Club
| |
| ** | UMSC | Umea Marine Sciences Centre
| |
| ** | UMSC | University Mathematics and Science
| |
| ** | UMSC | Upper Moreland Swim Club
| |
| * | UMSC | University of Manchester Surf Club
| |
| * | UMSC | University of Minnesota at Saint Cloud
| |
| * | UMSC | University of Michigan Sailing Club
| |
| * | UMSC | Uganda Moslem Supreme Council
| |
| * | UMSC | University Malaya Specialist Center
| |
| * | UMSC | Universal Media Solutions Canada
| |
| * | UMSC | University of Malaya Specialist Centre
| |
| * | UMSC | Underground Mining Subsidence Control
| |
| * | UMSC | unfractionated marrow stromal cells
| |
| * | UMSC | Unionville Milliken Soccer Club
| |
| * | UMSC | University of Malaya Socialist Club
| |
| * | UMSC | Upper Mississippi Science Center
| |
| * | UMSC | University of Minnesota Supercomputer Center
| |
| * | UMSC | Ultra Miniature Spy Camera
| |
| * | UMSC | Uganda Muslim Supreme Council
| |