| Acronym | Definition |
|---|
| OCT➣October |
| OCT➣Ontario College of Teachers (Canada) |
| OCT➣Office of Cable Television |
| OCT➣Optical Coherence Tomography (medical imaging technique) |
| OCT➣Octave |
| OCT➣Officer Cadet (Singapore) |
| OCT➣Octal |
| OCT➣Office of Counter Terrorism (various locations) |
| OCT➣Original Certificate of Title (Philippines) |
| OCT➣Office Customization Tool (software) |
| OCT➣Okinawa Cellular Telephone (Japan) |
| OCT➣Optimal Control Theory |
| OCT➣Object Class Table |
| OCT➣Overseas Countries and Territories |
| OCT➣Omnidirectional Control Technology |
| OCT➣Object Code Translator |
| OCT➣Output Control Transistor |
| OCT➣Optimized Compensation Transactions |
| OCT➣Ogaki Cable Television (Japan) |
| OCT➣Octamer Binding Transcription Factor |
| OCT➣Octamer-Binding Transcription Factor |
| OCT➣Offset Catch Tray (photocopiers) |
| OCT➣Official Conspiracy Theory |
| OCT➣Oregon Cultural Trust |
| OCT➣Ocular Coherence Tomography |
| OCT➣Optimal Cutting Temperature (compound for fixing specimens prior to cryosectioning) |
| OCT➣Office of Clinical Trials |
| OCT➣Oita Cable Telecom (Japan) |
| OCT➣Oxford Classical Texts |
| OCT➣One Cool Tuna (fishing accessories brand) |
| OCT➣Oxytocin Challenge Test |
| OCT➣Optimized Compression Topology (audio) |
| OCT➣Oral Contraceptive Therapy |
| OCT➣Order Cycle Time |
| OCT➣Organismo de Control Técnico (Spanish) |
| OCT➣Outlook Configuration Tool (software) |
| OCT➣Oak Cliff, Texas |
| OCT➣Ocala Civic Theatre |
| OCT➣Ocean Color and Temperature |
| OCT➣Optical Current Transducer |
| OCT➣Ontario Certified Teacher (Ontario College of Teachers; Canada) |
| OCT➣Officina Città Torino (Italian) |
| OCT➣Office, Chief of Transportation |
| OCT➣Optical Committee of Turkey |
| OCT➣OSHA Compliance Team |
| OCT➣Optical Channel Trail |
| OCT➣Operational Climatic Testing |
| OCT➣Operations Concept Team |
| OCT➣Ottawa City Transportation (Canada) |
| OCT➣Oils and Fats Chemistry and Technology |
| OCT➣Obligation-Certification Tree |
Oct - the month following September and preceding November