| STMS | Saint Timothy Middle School 
| Others |
| STMS | Sales Tax Management Service
| Others |
| STMS | Sales Tax Management Services
| Others |
| STMS | Saluda Trail Middle School
| Others |
| STMS | Santa Teresa Middle School
| Others |
| STMS | Sap Transport Management System
| Others |
| STMS | Sci Techniques Mass Spec
| Others |
| STMS | Scientific Technological Medical and Scholarly
| Others |
| STMS | Sequence Tagged Microsatellite Site
| Others |
| STMS | Severn Trent Metering Services
| Others |
| STMS | Short Test of Mental Status
| Others |
| STMS | Sick to My Stomach
| Others |
| STMS | Silver Trail Middle School
| Others |
| STMS | Single Transcranial Magnetic Stimulation
| Others |
| STMS | Site Traffic Management Supervisor
| Others |
| STMS | Society for Tennis Medicine and Science
| Others |
| STMS | Sonoran Trails Middle School
| Others |
| STMS | South Tahoe Middle School
| Others |
| STMS | South Tattnall Middle School
| Others |
| STMS | St Thomas More School
| Others |
| STMS | St Thomas More Society
| Others |
| STMS | Statewide Travel Management System
| Others |
| STMS | Stop Telling Me S***
| Others |
| STMS | Summit Trail Middle School
| Others |
| STMS | Susquehanna Township Middle School
| Others |
| STMS | Synchronized Transcranial Magnetic Stimulation
| Others |