| CTR | C-band Tracking Radar 
| Others |
| CTR | Cab Over Truck
| Others |
| CTR | Cadillac Team Russia
| Others |
| CTR | California Tumor Registry
| Others |
| CTR | Can't Think Right
| Others |
| CTR | Canadian Thamil Radio
| Others |
| CTR | Canaveral Test Report
| Others |
| CTR | Cancer Therapy and Research
| Others |
| CTR | Capital Triumph Register
| Others |
| CTR | Cardiac Transplant Research
| Others |
| CTR | CardioThoracic Ratio
| Others |
| CTR | Carpal Tunnel Release
| Others |
| CTR | Carrier Telegraph Receiver
| Others |
| CTR | Cash Transfer Report
| Others |
| CTR | Cassette Tape Recorder
| Others |
| CTR | Castle Rock, New York, Seismograph station
| Others |
| CTR | Catholics Totally Rock
| Others |
| CTR | Cattle Creek Airport
| Others |
| CTR | Cavitation Tendancy Ratio
| Others |
| CTR | Center for Theory Research
| Others |
| CTR | Center for Transatlantic Relations
| Others |
| CTR | Center for Translational Research
| Others |
| CTR | Center for Transportation Research
| Others |
| CTR | Center for Tropical Research
| Others |
| CTR | Center for Tropical Research's
| Others |
| CTR | Center for Turbulence Research
| Others |
| CTR | Centered
| Others |
| CTR | Central Territory Railroad Tariff Bureau
| Others |
| CTR | Central Texas Republican
| Others |
| CTR | Central Tool Room
| Others |
| CTR | Centre Technique Renault
| Others |
| CTR | Certificate To Recommend
| Others |
| CTR | Certification Test Requirement
| Others |
| CTR | Certified Tarot Reader
| Others |
| CTR | Certified Test Results
| Others |
| CTR | Certified Tumor Registrar
| Others |
| CTR | Charles Thomson Rees
| Others |
| CTR | Cheque This Record
| Others |
| CTR | Choose The Right
| Others |
| CTR | Choose To Repent
| Others |
| CTR | Cisco Threat Response
| Others |
| CTR | Civic Type R
| Others |
| CTR | Civil Tilt Rotor
| Others |
| CTR | Click Though rate
| Others |
| CTR | Click Through
| Others |
| CTR | Click Through Rate
| Others |
| CTR | Click Through Rates
| Others |
| CTR | Click Through Ratio
| Others |
| CTR | Click Thru Rate
| Others |
| CTR | Click-Through Rate
| Others |
| CTR | Clinical Trial Registry
| Others |
| CTR | Clinical Trial Request
| Others |
| CTR | Clinical Trials Register
| Others |
| CTR | Clinical Trials Research
| Others |
| CTR | Clinton Terminal Railroad (Carlton Trail Railway)
| Others |
| CTR | Clinton Terminal Railroad Company
| Others |
| CTR | Close The Rectum
| Others |
| CTR | Clothing and Textiles Research
| Others |
| CTR | Club Triumph
| Others |
| CTR | Coffee Time Romance
| Others |
| CTR | Coldboot Text Replacer
| Others |
| CTR | Collection Cryptologic Technician
| Others |
| CTR | College Talent Recruitment
| Others |
| CTR | College Terrace Resident
| Others |
| CTR | College Tuition Reimbursement
| Others |
| CTR | Color Transaction Register
| Others |
| CTR | Colorado Trail Race
| Others |
| CTR | Commercial Tenant Representation
| Others |
| CTR | Commercial Transport Regulations
| Others |
| CTR | Commercial Truck
| Others |
| CTR | Common Technical Regulation
| Others |
| CTR | Common Technical Regulations
| Others |
| CTR | Common Technical Requirements
| Others |
| CTR | Commute Trip Reduction
| Others |
| CTR | Commuter Trip Reduction
| Others |
| CTR | Composite Teacher Rating
| Others |
| CTR | Comprehensive Transportation Review
| Others |
| CTR | Computer Tape Recorder
| Others |
| CTR | Computing Tabulating Recording
| Others |
| CTR | COMSAT Technical Review
| Others |
| CTR | Connect Time Record
| Others |
| CTR | Connect To Resource
| Others |
| CTR | Connecticut Triumph Register
| Others |
| CTR | Connective Tissue Repair
| Others |
| CTR | Conscious Thought Revolution
| Others |
| CTR | Consolidated Technical Review
| Others |
| CTR | Consolidated Time Rate
| Others |
| CTR | Contour
| Others |
| CTR | Contract Technical Representative
| Others |
| CTR | Contractor
| Others |
| CTR | Contractual Technical Report
| Others |
| CTR | Contributor
| Others |
| CTR | Control Zone
| Others |
| CTR | Controllable Twist Rotor
| Others |
| CTR | Controlled Thermonuclear Reaction
| Others |
| CTR | Controlled Tornado Research
| Others |
| CTR | Cooperative Threat Reduction
| Others |
| CTR | Copper Transporter
| Others |
| CTR | Core Transistor Register
| Others |
| CTR | Corrupt The Righteous
| Others |
| CTR | Cost & Time Records
| Others |
| CTR | Cost Time and Resource
| Others |
| CTR | Council for Tobacco Research
| Others |
| CTR | Covert Telephone Recording
| Others |
| CTR | Cowboys Take Risks
| Others |
| CTR | Crash Team Racing
| Others |
| CTR | Crash Test Report
| Others |
| CTR | Crash Test Research
| Others |
| CTR | Crash Totally Rules
| Others |
| CTR | Critical Temperature Resistance
| Others |
| CTR | Cross The Road
| Others |
| CTR | Crosstour
| Others |
| CTR | Currency Transaction Report
| Others |
| CTR | Current Temple Recommend
| Others |
| CTR | Current Transfer Ratio
| Others |
| CTR | Curriculum Technology Resource
| Others |
| CTR | Custom Tracked Rides
| Others |
| CTR | Customer Technical Representative
| Others |
| CTR | Customer Trouble Report
| Others |
| CTR | Cutter
| Others |
| CTR | CUWIN (Community Wireless Network) Technical Report
| Others |
| CTR | Group C Turbo Ruf
| Others |
| CTR | Transaction Technology, Inc., Technical Library
| Others |