| Acronym | Definition |
|---|
| TRE | Trinity Railway Express (Texas) |
| TRE | Teaching and Research Excellence |
| TRE | Tampere (Finland) |
| TRE | Tribunal Regional Eleitoral (Brazil) |
| TRE | Trenton Transit Center (Amtrak station code; Trenton, NJ) |
| TRE | Tanzanian Royalty Exploration (Canada) |
| TRE | Trauma Release Exercise |
| TRE | Topaz Ranch Estates (Nevada) |
| TRE | Technology-Rich Environment |
| TRE | Teacher Resource Exchange (UK) |
| TRE | The Ripple Effect |
| TRE | Tele-Rilevamento Europa (Italian: Tele-Detection Europe) |
| TRE | Theologische Realenzyklopädie (German theological dictionary) |
| TRE | Tie Rod End (automotive steering part) |
| TRE | The Railway Engineering (UK) |
| TRE | Toxicity Reduction Evaluation (US EPA) |
| TRE | Transmission Equipment (telecommunications) |
| TRE | Telecommunications Research Establishment |
| TRE | Type Rating Examiner (aviation) |
| TRE | The Receivables Exchange (New Orleans, LA) |
| TRE | Target Rich Environment (gaming) |
| TRE | Texas Rules of Evidence |
| TRE | Tactical Receive Equipment |
| TRE | Transient Radiation Effects |
| TRE | Tiree, Scotland, United Kingdom - Tiree Island (Airport Code) |
| TRE | Thyroid-Responsive Element (genetics) |
| TRE | Tactical Readiness Evaluation |
| TRE | Training Readiness Evaluation |
| TRE | Total Rare Earth |
| TRE | Taux de Rémunération de l'Epargne (French: Rate of Return on Savings) |
| TRE | Trunk Resource Efficiency |
| TRE | Taux de Rendement Energétique (French: Energy Efficiency Ratio) |
| TRE | Tactical Radio Enclosure (US Army) |
| TRE | Tax Return Evaluation |
| TRE | Treaty Related Equipment |
| TRE | Thermodynamic Reliability Engineering |
| TRE | Test Results and Evaluation report |
| TRE | TLA-Rich Environment |
| TRE | Turbidity Removal Evaporator |
| TRE | Total Remaining Exposure |
| TRE | Techniques de Recherche Emploi (French: Job Search Techniques) |