| Point Park College, Pittsburgh, Pennsylvania, library code | Academic & Science |
| Potato Tuber Peroxidase | Academic & Science |
| Purchase To Pay | Accounts and Finance |
| Pre-tax Profit | Accounts and Finance |
| Publicly Traded Partnership | Accounts and Finance |
| Propensity To Pay | Accounts and Finance |
| Pointe-a-pitre | Airport Code |
| Piedmont Triad Partnership | Business |
| Program Task Planning | Business |
| Porous Tungsten Plug | Business |
| Platinum Temperature Probe | Business |
| Proximity Test Plug | Business |
| Production Test Plan | Business |
| Preliminary Task Plan | Business |
| Pathwork Transformation Program | Business |
| Project of Technological Priority | Business |
| Performance Through People | Business |
| Pensions for Technical Professionals | Business |
| Personal Touch Photography | Business |
| Peru Trade Promotion | Business |
| Progressive Technology Project | Business |
| Public Training Provider | Business |
| Post-tetanic Potentiation | Chemistry |
| Potomac Theatre Project | Community |
| Polishing The Pulpit | Community |
| Port Townsend Paper | Community |
| Prime Time Player | Community |
| Professional Training Programme | Community |
| Professional Teaching Practices | Community |
| Parent To Parent | Community |
| Pakistan Tourism Portal | Community |
| Practical Training for Professionals | Community |
| People-To-People | Community |
| Paper Tape Perforator | Computer Hardware |
| Paper Tape Punch | Computer Hardware |
| Pre-Press to Print | Computing |
| Picture Transport Protocol | Computing |
| Performance Transparency Protocol | Computing |
| Picture The Possibilities | Computing |
| Programming The Psychodrill | Computing |
| Program Tape Preparation | Computing |
| Parallel Track Path | Computing |
| Peer To Peer | Computing |
| Performance Test Platform | Computing |
| Package Test Procedure | Computing |
| Parcel Transfer Protocol | Computing |
| Platypus Finance | Cryptocurrency |
| Programmed Turn Phase | Electronics |
| Parallel Tools Platform | General |
| Preparing the Professoriate | General |
| Prime Time Productions | General |
| Postsecondary Transition Plan | General |
| Probabilistic Tree Pruning | General |
| Paid to Promote | General |
| Poisson Tree Processes | General |
| Pedestrian Traffic Prohibited | General |
| Protein Tyrosine Phosphatases | General |
| Purple Tape Pedigree | General |
| Potenial To Plump | General |
| Personal Threshold Power | General |
| Penetration Testing Professional | General |
| Pokemon Trainer Power | General |
| Personal Transition Plan | General |
| Procedure To Procedure | General |
| Peacekeeping Training Programme | General |
| Phonation Threshold Pressure | General |
| Professional Training Program | General |
| Pardon The Pun | General |
| Point To Point | General |
| Passenger Transportation Plan | General |
| Public Transportation Participation | General |
| Public Transport Plan | General |
| Powertrain Planning | General |
| Perodua Total Protect | General |
| Porsche Track Precision | General |
| Professional Transportation Partners | General |
| Pioneer Truck Parts | General |
| Professional Transportation Planner | Governmental |
| Pre-Travel Penalty | Governmental |
| Political Transformation Programme | Governmental |
| Public Transportation Program | Governmental |
| Public Trust Position | Governmental |
| Parti Togolais de Progres (Party for Togolese Progress) | Governmental |
| PATAL PANI | Indian Railway Station |
| Pity The Poor | Internet |
| Professional Travel Planner | Jobs |
| Professional Tax Planner | Jobs |
| Posterior Probability | Maths |
| Pediatric Trauma Program | Medical |
| Physical Therapy Professional | Medical |
| Pediatric Trauma Prevention | Medical |
| Protein Tyrosine Phosphatase | Medical |
| Perry The Platypus | Messaging |
| Preliminary Target Point | Military and Defence |
| Precision Time Protocol | Networking |
| Picture Transfer Protocol | Networking |
| Phase Transition Phenomena | Physics Related |
| Pointe-A-Pitre, Guadeloupe, French Antilles | Regional |
| Proficient Test Program | Softwares |
| Preliminary Test Plan | Softwares |
| Programmable Text Processor | Softwares |
| Point-to-point Phone(s) | Space Science |
| Princeton Tennis Program | Sports |
| Performance Technology Partners | Technology |
| Power Technology Pioneers | Technology |
| Personal Telco Project | Telecommunication |
