PTC may refer to:
Education
- Parent-teacher conference
- Pilot Training College, a former organisation in Ireland and the US
- Police Training Centre, Bangladesh
- Portage Trail Conference, an association of public schools in Ohio, US
- Pacific Theological College, theological college in Fiji
- Presbyterian Theological College, Victoria, Australia
- RAF Personnel and Training Command, 1994–2007
- Pittsburgh Technical College, 2-year college in Pittsburgh, PA, US
Organizations
- PTC India, an Indian energy trading company
- PTC Punjabi, a television network in India
- PTC Punjabi (Canada)
- PTC Punjabi Film Awards
- Partido Trabalhista Cristão (Christian Labour Party), a political party in Brazil
- Pakistan Telecommunication Company Ltd, KSE code
- Pakistan Tobacco Company
- Partit del Treball de Catalunya (Party of Labour of Catalonia), a communist party in Catalonia, Spain
- Polska Telefonia Cyfrowa, formal name of T-Mobile Polska
- Public Services, Tax and Commerce Union, UK, 1996–1998
- Public Transport Commission, in New South Wales, Australia
- Public Transport Corporation, in Victoria, Australia
- Radio Television of Serbia (Радио-телевизија Србије), a public broadcaster in Serbia
United States
- PTC (software company), formerly Parametric Technology Corp., Massachusetts, a software company
- PTC Therapeutics, a pharmaceutical company
- Parents Television Council, a U.S.-based advocacy group
- Pennsylvania Turnpike Commission
- Philadelphia Toboggan Coasters, roller coaster manufacturer, formerly Philadelphia Toboggan Company
- Philadelphia Transportation Company, 1940–1968
- Philmont Training Center, of the Boy Scouts of America
- Pioneer Theatre Company, Utah
Science and technology
- Papillary thyroid cancer, the most common type of thyroid cancer
- Pseudotumor cerebri or idiopathic intracranial hypertension, a condition
- Percutaneous transhepatic cholangiography, X-ray technique for biliary tract
- Phase-transfer catalyst, that facilitates interphase migration
- Phenylthiocarbamide, an organosulfur thiourea
- Positive temperature coefficient, of materials which increase resistance with temperature
- PTC thermistor, a type of resistor
- Polymeric positive temperature coefficient (PPTC) device or resettable fuse
- Poly(trimethylene carbonate), a derivative of trimethylene carbonate
- Patched, a protein receptor
- Positive train control, a type of train protection system
Other uses
- Paid to click, payment for viewing advertisements
- Pakuwon Trade Center, a shopping center in Surabaya, Indonesia
- Pass-Through Certificates, evidence of ownership of multiple Equipment Trust Certificates
- Piece to camera, spoken directly to a film or TV camera
- Players Tour Championship, in snooker
- Premium Tax Credit, Affordable Care Act provision
- Production tax credit, US, for renewable energy production
- Punggol MRT/LRT station (LRT station code)