| TASS | Tactical Air Support Squadron 
| Others |
| TASS | Tactical Airborne Surveillance System
| Others |
| TASS | Tactical Automated Security System
| Others |
| TASS | Tactical Automated Switch System
| Others |
| TASS | Tactical Switching System
| Others |
| TASS | Taiwanese American Student Society
| Others |
| TASS | tal Airport Security Solution
| Others |
| TASS | tal Army School System
| Others |
| TASS | Talented Athlete Scholarship Scheme
| Others |
| TASS | Talented Athletes' Scholarship Scheme
| Others |
| TASS | Tanzania Adventist Secondary School
| Others |
| TASS | Tarboro Association of Saltwater Sportsman
| Others |
| TASS | Teaching Academic Survival and Success
| Others |
| TASS | Technical Acquisition Support Services
| Others |
| TASS | Telegrafnoye Agentstvo Sovyetskogo Soyuza (Telegraphic Agency of the Soviet Union)
| Others |
| TASS | Telluride Association Sophomore Seminar
| Others |
| TASS | Tenant Assessment Sub-System
| Others |
| TASS | Terminal Air Surveillance System
| Others |
| TASS | The Alpha School System
| Others |
| TASS | The Amateur Sky Survey
| Others |
| TASS | There All Silver Surfers
| Others |
| TASS | Thoroughbred Alliance Show Series
| Others |
| TASS | Tilt Authorisation and Speed Supervision
| Others |
| TASS | Tno Automotive Safety Solutions
| Others |
| TASS | Tooling Aid Scheduling System
| Others |
| TASS | Total Army School System
| Others |
| TASS | Toxic Anterior Segment Syndrome
| Others |
| TASS | Toyota Advanced Safety Seminar
| Others |
| TASS | Toyota All Star Showdown
| Others |
| TASS | Tracking Analytics Software Suite
| Others |
| TASS | Train Acoustic Sound System
| Others |
| TASS | Trusted Associate Sponsorship System
| Others |