PTC may refer to:
In education:
- Pilot Training College, a JAR Flight Training Organisation fully approved for commercial pilot training
- Police Training Centre, Bangladeshi academies to impart training mainly to Trainee Recruit Constables of Bangladesh Police
- Portage Trail Conference, an association of public schools within the northeastern Ohio counties of Portage, Summit, and Stark
- Presbyterian Theological Centre, a theological college of the Presbyterian Church of Australia
- Presbyterian Theological College, the theological college of the Presbyterian Church of Victoria
- Princeton Tower Club, one of the ten eating clubs at Princeton University
- Princeton Triangle Club, a theater troupe at Princeton University
- RAF Personnel and Training Command, an obsolete command of the Royal Air Force
In organizations:
- Pakistan Telecommunication Company Ltd, the largest telecommunication company in Pakistan
- Pakistan Tobacco Company, a cigarette company in Pakistan
- Parametric Technology Corporation, a Massachusetts software company
- Parents Television Council, a U.S. based advocacy group
- Party of Labour of Catalonia (Partit del Treball de Catalunya), a communist party in Catalonia, Spain
- Pennsylvania Turnpike Commission, a transportation agency created to construct, finance, operate and maintain the Pennsylvania Turnpike
- Philadelphia Toboggan Company, the oldest existing roller coaster manufacturing company in the world
- Philadelphia Transit Company, a private company acquired by SEPTA in 1968
- Pilot Travel Centers, a brand of the Pilot Flying J chain of North American truck stops
- Pioneer Theatre Company, one of four fully professional theatre companies in Utah
- Polska Telefonia Cyfrowa, a Polish mobile phone network operator whose main brand is T-Mobile
- PTC Punjabi, a popular Punjabi television network from India
- PTC Punjabi (Canada), a Canadian category 2 Punjabi language digital cable specialty channel
- Public Services, Tax and Commerce Union, a short-lived trade union in the United Kingdom
- Public Transport Corporation, a state-owned corporate body that operated passenger and freight trains, trams and bus services in Victoria, Australia
- Radio Television of Serbia (Радио-телевизија Србије), the public broadcaster in Serbia
In science:
- papillary thyroid cancer, the most common type of thyroid cancer
- Echinopsis peruviana (Peruvian Torch Cactus), a fast-growing columnar cactus native to the western slope of the Andes in Peru
- Idiopathic intracranial hypertension (also pseudotumor cerebri), a neurological disorder characterized by increased intracranial pressure in the absence of a tumor or other diseases
- Percutaneous transhepatic cholangiography, a radiologic technique used to visualize the anatomy of the biliary tract
- Phase-transfer catalyst, a catalyst that facilitates the migration of a reactant from one phase into another phase where reaction occurs
- Phenylthiocarbamide, an organosulfur thiourea containing a phenyl ring
- Plant tissue culture, a practice used to propagate plants under sterile conditions
- Positive temperature coefficient, materials that experience an increase in electrical resistance when their temperature is raised
- Premature termination codon, a nucleotide triplet within messenger RNA that signals a termination of translation
- Patched, a transmembrane protein receptor involved in the Hedgehog signaling pathway
- The Photon Transfer Curve in CCDs
Other:
- Paid To Click, an online business model where a consumer is paid to view an advertisement
- Pass-Through Certificates, instruments that evidence the ownership of two or more Equipment Trust Certificates
- Peachtree City, Georgia, a city in Fayette County, Georgia, United States
- Piece to camera, a television and film term used for when a presenter or a character speaks directly to the viewing audience through the camera.
- Players Tour Championship, a series of minor-ranking snooker tournaments
- Positive train control, a system of monitoring and controlling train movements to provide increased safety
- Production Tax Credit, a type of tax credit or sum deducted from the total amount a taxpayer owes to the state