| Acronym | Definition |
|---|
| CT | Connecticut (US postal abbreviation) |
| CT | Court |
| CT | Count |
| CT | Computed Tomography (imaging technique) |
| CT | Carat |
| CT | Central Time |
| CT | Counter |
| CT | Critical Thinking |
| CT | Central African Republic |
| CT | Clinical Trial |
| CT | Canterbury (postcode, United Kingdom) |
| CT | Contracting |
| CT | Cape Town (South Africa) |
| CT | Come Together (Beatles song) |
| CT | Control Techniques (Emerson Electric Company; St. Louis, MO) |
| CT | carton |
| CT | Chicago Tribune |
| CT | Computer Technology |
| CT | Cold Turkey |
| CT | Collaborative Tools |
| CT | Computer Technician |
| CT | Cross Talk |
| CT | Computerized Tomography |
| CT | Communications Technology |
| CT | Connective Tissue |
| CT | Counterterrorism |
| CT | Calcitonin |
| CT | Contact Time |
| CT | Census Tract |
| CT | Chaos Theory |
| CT | Computer Telephony |
| CT | Clock Tower (computer game) |
| CT | Counter Terrorist |
| CT | Charitable Trust |
| CT | Cellular Telephone |
| CT | Computerized Axial Tomography (also see CAT; CT is preferred) |
| CT | Canada Trust |
| CT | Conspiracy Theory (movie) |
| CT | Cognitive Therapy |
| CT | Can't Talk |
| CT | Canadian Tire |
| CT | Chrono Trigger (video game) |
| CT | Cycle Time |
| CT | Classroom Teacher |
| CT | CALTRANS (California Department of Transportation) |
| CT | Crazy Taxi (Dreamcast game) |
| CT | Current Transformer |
| CT | Certification Test |
| CT | China Town |
| CT | Core Team |
| CT | Clock Time |
| CT | Changing Times (journal) |
| CT | Chemical Test |
| CT | Coattails (multi-game guild) |
| CT | Common Terms |
| CT | Cooling Tower |
| CT | Corporate Technology |
| CT | Carboxyl-Terminal |
| CT | Charge Transfer |
| CT | Control Tower |
| CT | Counseling and Testing |
| CT | Cholera Toxin |
| CT | Certification Testing |
| CT | Cordless Telephone |
| CT | Country Team |
| CT | Coiled Tubing (oil & gas) |
| CT | Computer Terminal |
| CT | Chris Tucker (actor) |
| CT | Clinical Terms |
| CT | Combustion Turbine |
| CT | Crazy Town (band) |
| CT | Cut Throat |
| CT | Cocteau Twins (band) |
| CT | Clone Trooper (Star Wars) |
| CT | Cable Tray |
| CT | Complementary Therapy |
| CT | Channel Tunnel (England/France) |
| CT | Clotting Time (test of blood) |
| CT | Commissario Tecnico (Italian: national's soccer team Head Coach) |
| CT | Compensatory Time |
| CT | Cherished Teddies (Enesco collectible figurines) |
| CT | Catania, Sicilia (Italian province) |
| CT | Corey Taylor (Slipknot) |
| CT | Crimp Tool |
| CT | Conformance Testing |
| CT | Calendar Time |
| CT | Critical Technology (EU program) |
| CT | Cold Tolerance |
| CT | Charge Time (gaming) |
| CT | Contact Team |
| CT | Chemical Terrorism |
| CT | Cable, Test |
| CT | Cyber Terrorism |
| CT | Copper Tube |
| CT | Communications Technician (AWACS communications position) |
| CT | Conflict Transformation |
| CT | Coat and Tie |
| CT | Calf Thymus |
| CT | Competition Tribunal (Canada) |
| CT | Cloud Top |
| CT | Captain Tsubasa (Japanese comic) |
| CT | Calgary Transit |
| CT | Cipher Text |
| CT | Credit Time (US NIH) |
| CT | Community Title (Australia) |
| CT | City Temple (Cardiff, UK) |
| CT | Color Transparency |
| CT | Cover Test (ophthalmology) |
| CT | Colour Television |
| CT | Control Task |
| CT | Customer Test |
| CT | Computer-aided Tomography (less common) |
| CT | Cordless Telecommunications |
| CT | Conning Tower |
| CT | Cloud Type |
| CT | Cross Traffic |
| CT | Commercial Thinning (forestry) |
| CT | Ceská Televize (Czech Television) |
| CT | Compact Tension (metallurgy) |
| CT | Control Transformer |
| CT | Center-Tapped (electrical: transformer) |
| CT | Communications Terminal |
| CT | Certificate of Transliteration |
| CT | Coal Terminal |
| CT | Catechesi Tradendae (On Catechesis in our Time) |
| CT | Condensed Tannin |
| CT | Creatine Transporter (genetics) |
| CT | Central Teaching |
| CT | Collecting Tubule |
| CT | Communist Terrorists (British Malayan Conflict) |
| CT | Constitutional Tribunal |
| CT | Cazic Thule (Everquest) |
| CT | Commissioning Team |
| CT | Center Thickness (of contact lens) |
| CT | Circle Trip (airlines) |
| CT | Continuation Training |
| CT | Contractor Test |
| CT | Combined Testing |
| CT | Combined Trial |
| CT | Certificate of Teaching |
| CT | Certified Translator (American Translators Association) |
| CT | Classic Trilogy (Star Wars) |
| CT | Cryptologic Technician (formerly Communications Technician; USN Rating) |
| CT | Clamp Terminal |
| CT | Commission de la Transparence (French healthcare quality-assessment agency) |
| CT | Cable Tunnel |
| CT | Crawler Transporter (NASA) |
| CT | Contractor Testing |
| CT | Certified Thanatologist |
| CT | Central Transition |
| CT | control telemetry (US DoD) |
| CT | Cum Tempore (Latin: at a later date) |
| CT | Conformance Tester |
| CT | Cortico-Thalamic |
| CT | Client Task |
| CT | Career Trainee |
| CT | Chemical Titles (periodical) |
| CT | Charlie Tango (ham radio) |
| CT | Clear Trunk |
| CT | Command Transmitter |
| CT | Cavitation Tunnel |
| CT | Certified in Thanatology: Death, Dying and Bereavement (Association for Death Education and Counseling) |
| CT | Compatibility Technology |
| CT | Combat Trains |
| CT | Comparison Text |
| CT | Contraterrene (anti-matter, science fiction) |
| CT | Compensation Theorem |
| CT | CoachTrack (coaching software by Eclipse Computing) |
| CT | Common Tier |
| CT | Card-To-Tape |
| CT | Cadet in Training (Texas A&M Corps of Cadets) |
| CT | Coordinated Turn Model |
| CT | Channel Terminator |
| CT | Chimney Tray |
| CT | Chlamydia Trochomatis |
| CT | Confederation Test |
| CT | Confederation Text |
| CT | Cedar Trust |
| CT | Cascaded Triplet |
| CT | Cognizant Test |
| CT | Curve-to-Tangent Point |
| CT | Circular Trunking |
| CT | Create Tasker |
| CT | Cooperative Trust Company of Canada |
| CT | Church Times (UK) |