| Rank | Abbreviation | Meaning |
|---|
| ***** | TSAS | Tactile Situational Awareness System
| |
| ***** | TSAS | Tactical Situational Awareness System
| |
| ***** | TSAS | Threat Situational Awareness System
| |
| ***** | TSAS | Total Severity Assessment Score
| |
| *** | TSAS | Training Standards Advisory Service
| |
| *** | TSAS | Technical Support Advisory Service
| |
| *** | TSAS | The School Attendance System
| |
| *** | TSAS | Two Stage Activated Sludge
| |
| *** | TSAS | Tri State Avian Society
| |
| *** | TSAS | The Secret Agent Song
| |
| ** | TSAS | TurnKey Sales Automation Solutions
| |
| ** | TSAS | Tax Shelter Annuities
| |
| ** | TSAS | Tulsa School of Arts and Sciences
| |
| ** | TSAS | Technology School of Atmospheric Sciences
| |
| * | TSAS | Technology and Special Analysis Staff
| |
| * | TSAS | Tactile Situation Awareness System
| |
| * | TSAS | Tanzania Service Availability Survey
| |
| * | TSAS | Total Severity Assessment Scores
| |
| * | TSAS | Think Small Act Small
| |
| * | TSAS | The Small Animal Surgeon Ltd
| |
| * | TSAS | The Southern African Stainless
| |
| * | TSAS | The Symposium on Applications
| |
| * | TSAS | Telecom Service Access Subscription
| |
| * | TSAS | Time Slot Assignment Scheme
| |
| * | TSAS | The Small Arms Survey
| |