| Acronym | Definition |
|---|
| PTC | Positive Temperature Coefficient |
| PTC | Production Tax Credit |
| PTC | Positive Train Control |
| PTC | Piedmont Technical College (South Carolina) |
| PTC | Polska Telefonia Cyfrowa (Polish telecommunications company) |
| PTC | Pseudotumor Cerebri |
| PTC | Professional Testing Corporation |
| PTC | Phenylthiocarbamide |
| PTC | Phase Transfer Catalysis |
| PTC | Partenariat Technologique Canada (Technology Partnerships Canada) |
| PTC | Pulaski Technical College (Arkansas) |
| PTC | Permit to Construct (building license) |
| PTC | Pioneer Theatre Company (Utah) |
| PTC | Philmont Training Center (Boy Scouts of America) |
| PTC | Philadelphia Toboggan Company (roller coaster company in Hatfield, Pennsylvania) |
| PTC | Plasma Thromboplastin Component (Blood Coagulation Factor IX) |
| PTC | Preaching to the Choir |
| PTC | Public Transport Council (Singapore) |
| PTC | Public Transport Corporation (Chennai, India) |
| PTC | Police Training Commission |
| PTC | Plastics Technology Center |
| PTC | Positive Thermal Coefficient |
| PTC | Proton Therapy Center |
| PTC | Professional and Technical Communication (course) |
| PTC | Pharmacy and Therapeutics Committee (Group Health Cooperative) |
| PTC | Playwrights Theatre Centre (Vancouver, British Columbia) |
| PTC | Parallel Test Component (TTCN) |
| PTC | Platform Technology Committee |
| PTC | Personal Torrent Collector |
| PTC | Physical and Theoretical Chemistry |
| PTC | Post-Tetanic Count |
| PTC | Personnel & Training Command (UK) |
| PTC | Pickering Town Centre (shopping mall; Canada) |
| PTC | Plastics Technology Centre (Karachi Pakistan) |
| PTC | Pulse-Tube Cryocooler |
| PTC | Pricing, Terms and Conditions |
| PTC | Petroleum Technology Company |
| PTC | Project Time & Cost |
| PTC | Portable Tele-Transaction Computer (in reference to hand held barcode scanners) |
| PTC | Postal Training Centre (India) |
| PTC | Point de Consigne (French: Setpoint) |
| PTC | Primary Toll Carrier |
| PTC | Philadelphia Transit Company |
| PTC | Patches Thoughtfully Considered |
| PTC | Platform Twin-ring Containerized (heavy crane) |
| PTC | People's Trading Centre |
| PTC | Porcelain Tile Cutter |
| PTC | Power Temperature Control |
| PTC | Physical Transmission Channel |
| PTC | Permission to Connect |
| PTC | Payload Training Capability |
| PTC | Power Transfer Conduit (Star Trek) |
| PTC | Pretrial Confinement |
| PTC | Procédés Techniques de Construction (French) |
| PTC | Peoria Terminal Company |
| PTC | Primary Technical Contact |
| PTC | Price to Consumer |
| PTC | Progress Telecommunications Corporation |
| PTC | Panarail Tourism Company |
| PTC | Phase Tracking Circuit |
| PTC | Postgraduate Training Center |
| PTC | Perkutane Transhepatische Cholangiodrainage (German, gastroenterology) |
| PTC | Portsmouth Tea Company (New Hampshire, USA) |
| PTC | Practical Training Class |
| PTC | Partido de los Trabajadores Canarios (Canarian Workers Party) |
| PTC | Paneuropean Transport Corridor |
| PTC | Public Telephone Company |
| PTC | Primary Technical Course |
| PTC | Polynomial Transform Computation |
| PTC | Project Target Cost |
| PTC | Positive Transaction Control |
| PTC | Philadelphia Technology Center |
| PTC | Permission to Camp (parental consent form for insurance purposes) |
| PTC | Power Terminal Cabinet |
| PTC | Polarization Time Coding (MIMO) |
| PTC | Paradigm Technology Consulting (East Windsor, NJ) |
| PTC | Patent, Trademark and Copyright (legal rights; various organizations) |
| PTC | Polskiej Telefonii Cyfrowej (Polish: Polish Digital Telephony) |
| PTC | Papillary Thyroid Carcinoma |
| PTC | Parent Teacher Club |
| PTC | Public Transportation Commission (various locations) |
| PTC | Protect the Children (various organizations) |
| PTC | Professional Training Course (various organizations) |
| PTC | Product Technology Center (various locations) |
| PTC | Pennsylvania Turnpike Commission |
| PTC | Parent Teacher Conference |
| PTC | Property Tax Credit (various locations) |
| PTC | Protocol Test Card (test board) |
| PTC | Paid to Click |
| PTC | Percutaneous Transhepatic Cholangiography (cancer-diagnostic procedure) |
| PTC | Paint Technology Center (US Army Corps of Engineers) |
| PTC | Phone Travel Charger |
| PTC | Peachtree City |
| PTC | Pentagon Telecommunications Center |
| PTC | Parametric Technology Corp. |
| PTC | Parents Television Council |
| PTC | Chief Photographic Intelligenceman (Naval Rating) |
| PTC | Pacific Telecommunications Council |
| PTC | Pakistan Telecommunication Corporation |
| PTC | Penang Turf Club (est. 1864; Penang, Malaysia) |
| PTC | Para Tech Coating, Inc. (various locations) |
| PTC | Pre-Trial Conference (various locations) |
| PTC | Private Tuition Center |
| PTC | Passively Thermally Compensated |
| PTC | Psychiatric Treatment Center (various locations) |