| Acronym | Definition |
|---|
| TA | Teaching Assistant |
| TA | Trans Am (Pontiac automobile model) |
| TA | Turn Around |
| TA | Time Attack (gaming) |
| TA | Thanks Again |
| TA | Travel Agent (Agency) |
| TA | Technology Assessment |
| TA | Territorial Army (UK) |
| Ta | Tank (aircraft designed by Kurt Tank & built by Focke-Wulf Flugzeugbau GmbH) |
| TA | Transition(al) Architecture |
| TA | Tuition Assistance |
| TA | Transit Authority |
| TA | Transfer Agent (financial industry) |
| TA | Tel Aviv |
| TA | To Above |
| TA | Transactional Analysis (psychology) |
| TA | Transmit(ter) Address |
| TA | Target Audience |
| TA | Trade Association |
| TA | Total Area (geometry) |
| TA | Total Annihilation (game by Cavedog Entertainment) |
| TA | Tori Amos (singer) |
| TA | Trading As (similar to DBA, doing business as) |
| TA | Training Area |
| TA | Trend Analysis |
| TA | Traffic Accident |
| TA | Traffic Announcement |
| TA | Travel Authorization |
| TA | Titus Andronicus |
| TA | Tiger Army (band) |
| TA | Traffic Analysis |
| TA | Tibialis Anterior |
| TA | Total Average |
| TA | Total Alkalinity (water chemistry) |
| TA | Training Aid |
| TA | Tom Atkins (Actor) |
| TA | Tentative Agreement |
| TA | Triacetin |
| TA | Timing Advance |
| TA | Therapeutic Area |
| TA | Tricuspid Atresia (congenital heart defect) |
| TA | Trey Anastasio (Phish band member) |
| TA | Test Article |
| TA | Temporal Artery |
| TA | Time & Attendance |
| TA | Trading Assistant (eBay) |
| TA | Textile and Apparel |
| TA | Travel Assistance |
| TA | Type of Assistance |
| TA | Time Alignment (audio synchronization) |
| TA | Temperature Alarm |
| TA | Threat Analysis (information operations/computer network defense) |
| TA | Training Agency |
| TA | Tetris Attack (video game) |
| TA | Traffic Advisory |
| TA | Tenancy Agreement |
| TA | Teacher Assessment (education) |
| TA | Test Access |
| TA | Travel Advance |
| TA | Trade Assistant |
| TA | Tension Arterial (Spanish: Blood Pressure) |
| TA | Temperature Ambient |
| TA | Tugas Akhir (Indonesian: Final Assignment) |
| TA | Terrain Analysis |
| TA | Tree Algorithm |
| TA | Taranto, Puglia (Italian province) |
| TA | Total Army |
| TA | Terminal Adaptor |
| TA | Theater Army |
| TA | Therapeutic Abortion |
| TA | Total Attempts (volleyball statistic) |
| TA | Texture Analyser |
| TA | Thanks Awfully |
| TA | Terrain Avoidance |
| TA | Traditional Authorities |
| TA | Trusted Agent |
| TA | Territorial Authority (New Zealand) |
| TA | Transamerica Corporation |
| TA | Travel Approval |
| TA | Towed Array |
| TA | Team AnandTech (distributed processing team) |
| TA | Total Audience |
| TA | Test Activity |
| TA | Tubular Adenoma |
| TA | Track Analysis |
| TA | Trick Attack (game) |
| TA | Test Alert (Hekimian) |
| TA | Throughput Accounting |
| TA | Transmission Analysis |
| TA | Transverse Acoustic (Raman scaterring) |
| TA | Terminal Address (computing) |
| TA | Transducer Assembly |
| TA | Toyota Atlantic (auto racing) |
| TA | Truckstops of America |
| TA | Thermal Array |
| TA | Training Analyst |
| TA | Training Agent |
| TA | Traveling Allowance |
| TA | Thermal Asperity |
| TA | Telescope Assembly |
| TA | Threat Avoidance |
| TA | TravelCenters of America, Inc. |
| TA | Transient Alert |
| TA | Test Authority |
| TA | Transmitter Assembly |
| TA | Twisted Animation (band) |
| TA | Think Attack |
| TA | Tropical Air Mass (weather) |
| TA | Toei Animation Co. Ltd |
| TA | Timing Algorithm |
| TA | Test Authorization |
| TA | Transportation Approval |
| TA | TexAgs (Texas A&M sports forum) |
| TA | Titulaire Académique (French: Academic Holder) |
| TA | Time Accelerator (Quake 2 gaming) |
| TA | Threat Axis |
| TA | Teresian Association |
| TA | Temasek Academy |
| TA | Territory Assignment |
| TA | Terminates Above (mechanical services design) |
| TA | Taca International Airlines, El Salvador (IATA airline code) |
| TA | Task Authorizations |
| TA | Transfer Aisle |
| TA | Trainee Agent |
| TA | Taure en'Arvandor (gaming) |
| TA | Tiberian Adventure (game) |
| TA | Transportability Approval |
| TA | Tracked Aggression (music disks) |
| TA | TRADOC Airlift Committee |
| TA | Teaching/Teacher's Aide |
| TA | Taxpayer Advocate |
| TA | Technical Analysis |
| TA | Technical Architecture |
| TA | Technical Assessment |
| TA | Ambient Temperature |
| TA | Table of Allowance |
| TA | Tamper Alarm |
| TA | Tantalum |
| TA | Target Acquisition |
| TA | Target Address |
| TA | Target Analysis |
| TA | Target Area |
| TA | Task Analysis |
| TA | Technical Advance |
| TA | Teachers Assistant |
| TA | Tactical Airlift |
| TA | Tank Army (CIS) |
| TA | Technical Advisory (computer security bulletin) |
| TA | Technical Assist (computer security bulletin) |
| TA | Team Arena (Quake 3 expansion pack) |
| TA | Tasking Authority |
| Ta | Antenna Temperature |
| TA | Teacher Advisor |
| TA | Tangerine Army (gaming group) |
| TA | Technical Assistance |
| TA | Technical Arrangement |
| TA | Tartan Army (Supporters of Scotland's national football team) |
| TA | Technical Area |
| TA | Technical Adviser |
| TA | Technical Assembly |
| TA | Technical Associates (Canoga Park, CA) |
| TA | Technical Audit |
| TA | Technology Administration |
| TA | Taunton (postcode, United Kingdom) |
| TA | Taxing Authority |
| TA | Technical Acceptance |