| Acronym | Definition |
|---|
| TAR | Tape Archive |
| TAR | Third Assessment Report (Intergovernmental Panel on Climate Change) |
| TAR | The Amazing Race (TV show) |
| TAR | Travel(er) Authorization Request |
| TAR | Tape Archiver |
| TAR | Texas Association of Realtors |
| TAR | Tibet Autonomous Region |
| TAR | Tarpon (FAO fish species code) |
| TAR | Television and Radio |
| TAR | Total Ankle Replacement (medical procedure) |
| TAR | The American Resistance |
| TAR | Traffice Accident Report |
| TAR | The Accounting Review (American Accounting Association) |
| TAR | Tribunale Amministrativo Regionale |
| TAR | Tennessee Association of Realtors |
| TAR | Thrombocytopenia with Absent Radius (genetic disorder) |
| TAR | Top Albania Radio (online radio) |
| TAR | Tavor Assault Rifle (firearm) |
| TAR | Treatment Authorization Request |
| TAR | Technical Assistance Request |
| TAR | True Amplitude Recovery (energy exploration) |
| TAR | Technology Assessment Research (various organizations) |
| TAR | Tel'aran'rhiod (Wheel of Time Series) |
| TAR | Telluride Association of Realtors (Telluride, CO) |
| TAR | Target Acquisition Radar |
| TAR | Tri-Annual Review (various companies) |
| TAR | Transcriptionally Active Region |
| TAR | Total Accident Rate |
| TAR | Transmission Access Review (UK) |
| TAR | Treatment Administration Record |
| TAR | Tone Alert Radio |
| TAR | Temporal Association Rules on Evolving Numerical Attributes (data mining) |
| TAR | Technical Assessment Report |
| TAR | Talent & Artist Relations |
| TAR | Threat Assessment Report |
| TAR | Terminal Area Radar (surveillance of aircraft near the airport) |
| TAR | Transverse Abdominis Muscle Release |
| TAR | The Angling Report (fishing newsletter) |
| TAR | Tour Aéroréfrigérante (French: cooling tower) |
| TAR | Test Accuracy Ratio |
| TAR | Test Analysis Report |
| TAR | Transportation Acquisition Regulations (US Department of Transportation) |
| TAR | Tunisair, Tunisia (ICAO code) |
| TAR | Technology Area Review |
| TAR | Top Antireflective (semiconductor processing) |
| TAR | Terrain Avoidance Radar |
| TAR | Temporary Admission Regime (Argentina) |
| TAR | Technical Action Request |
| TAR | Turn Around Ratio |
| TAR | Task Assignment Record |
| TAR | Test Authorization Request |
| TAR | Technical Assistant Request |
| TAR | Triel Auto Rétro (French automobile club) |
| TAR | Technical Activities Report |
| TAR | Time and Activity Report |
| TAR | Ticket Agent Report |
| TAR | Trace Analysis Report |
| TAR | Testability Analysis Report |
| TAR | Training and Administrative Reserve |
| TAR | Team Action Record |
| TAR | Training & Administration of Reserves |
| TAR | TRACON Acceptance Rate |
| TAR | Technical Architecture Roadmap |
| TAR | Technical Advisory Report |
| TAR | Task Acknowledgement Report |
| TAR | Tactical Air Reconnaissance/Request |
| TAR | Technical Acceptance Recommendation |
| TAR | Thrust Augment Rocket |
| TAR | Trouble Activity Report |
| TAR | Transaction Approval Request |
| TAR | Task Assignment Request |
| TAR | Time & Attendance Report |
