| Personnel Transfer Capsule | Academic & Science |
| Publishing Technology Centre | Academic & Science |
| Publishing Technology Center | Academic & Science |
| Pulaski Technical College | Academic & Science |
| Pittsburgh Technical College | Academic & Science |
| Potential Tropical Cyclone | Academic & Science |
| Port Alice (ak) | Airport Code |
| Private Trust Company | Business |
| PAR Technology Corporation | Business |
| PVUSA Test Conditions | Business |
| Philadelphia Transportation Company | Business |
| Parapsychic Talents Center | Business |
| Pittsburgh Typewriter Calculator | Business |
| Posts and Telecommunications Corporation | Business |
| Preliminary Theological Certificate | Business |
| Per Ton Cost | Business |
| Pakistan Telecommunication Corporation | Business |
| Professional Testing Corporation | Business |
| Premium Tax Credit | Business |
| Pittsburgh Technology Council | Business |
| Pyramid Technical Consultants | Business |
| Philadelphia Theatre Company | Business |
| Pineville Telephone Company | Business |
| Pakistan Tobacco Company | Business |
| Prime Time Certified | Certifications |
| Positive Temperature Coefficient | Chemistry |
| Parent Teacher Cooperative | Community |
| Parent Teacher Council | Community |
| Parent Teacher Club | Community |
| Prime Time Country | Community |
| Parent Teacher Child | Community |
| Program and Training Conference | Community |
| Parent Teacher Conference | Community |
| Parents Teachers and Children | Community |
| Parent's Television Council | Community |
| PictureTel Transform Coder | Computer and Networking |
| Polymorphic Tracking Code | Computing |
| Prakash Telecom Corporation | Computing |
| Precision Technologies and Components | Computing |
| Pipeline Technology Conference | Computing |
| Packet Telephony Center | Computing |
| Pay To Call | Computing |
| Prepare To Change | Computing |
| Please Take Care | Computing |
| Person To Contact | Computing |
| Pragmatic Trellis Code | Computing |
| Piedmont Technical College | Educational Institute |
| Pre-process Treatment Chamber | Electronics |
| Parallel Test Component | Electronics |
| Principal's Training Center | General |
| Positive Train Control | General |
| Piece To Camera | General |
| PVUSA Test Condition | General |
| Pay To Click | General |
| Platform Twinring Containerised | General |
| Positive Temperature Coeffecient | General |
| Princeton Training Center | General |
| Passenger Type Code | General |
| Positive Temperature Coeficient | General |
| Pan Tilt Controller | General |
| Pagan Teaching Circle | General |
| Phase Transfer Catalysis | General |
| Paid To Click | General |
| Practical Training Centre | General |
| Pet Trading Cards | General |
| Post Transcriptional Control | General |
| Professional Temperature Calibrator | General |
| Parents Television Counsel | General |
| Post Tetanic Count | General |
| Produce Transform Consume | General |
| Place And Time Changer | General |
| Production Touring Cars | General |
| Porsche Travel Club | General |
| Power Train Controls | General |
| Pop Top Caravan | General |
| Paccar Technical Center | General |
| Power Tonneau Cover | General |
| Push To Connect | General |
| Pajarito Thunderbird Club | General |
| Program Timing and Control | General |
| Peterbilt Truck Club | General |
| Pending Trouble Code | General |
| Permanent Traffic Counter | General |
| Prius Touring Club | General |
| Pt Cruiser | General |
| Points To Consider | Governmental |
| Parklawn Training Center | Governmental |
| Platform Twinring Containerized | Governmental |
| Proportional Torque Control | Governmental |
| Personal Transfer Capsules | Governmental |
| Planned Transportation Corridor | Governmental |
| Power Training Craft | Governmental |
| Photographic Intelligenceman Chief Petty Officer | Governmental |
| Private Transportation Company | Governmental |
| Pennsylvania Turnpike Commission | Governmental |
| Public Transport Council | Governmental |
| Police Training Centre | Governmental |
| Production Tax Credit | Income Tax |
| Professional Technical and Clerical | Jobs |
| PseudoTumor Cerebri | Medical |
| Percutaneous transhepatic cholangiogram | Medical |
| Percutaneous Transhepatic Cholangiography | Medical |
| Papillary Thyroid Carcinoma | Medical |
| Pass The Chips | Messaging |
| Personnel & Training Command | Military and Defence |
| Post Traffic Control | Military and Defence |
| Pentagon Telecommunications Center | Military and Defence |
| Peace Through Confrontation | Military and Defence |
| Primary Traffic Channel | Military and Defence |
| PTC India Limited | NSE Company Symbol |
| Plainview Terminal Company | Regional |
| Plainview Terminal | Regional |
| Passive Thermal Control | Space Science |
| Payload Training Complex | Space Science |
| Portable Temperature Controller | Space Science |
| Pegasus Track Club | Sports |
| Pots Tandem Centrex | Telecommunication |
| Pacific Telecommunications Council | Telecommunication |