| Training Placement Officer | Academic & Science |
| Turn Power on Off | Academic & Science |
| Association for Image Processing (Poland) | Academic & Science |
| Towarzystwo Przetwarzania Obrazów | Academic & Science |
| Tanalian Point (ak) | Airport Code |
| Tropical Pop Orchestra | Community |
| Travelling Post Officer | Community |
| The Prodigal Ones | Community |
| The Program Object | Computing |
| Twisted Pair Only | Electronics |
| Total Power Output | Electronics |
| Treatment Plant Operator | General |
| Team Pop Off | General |
| Temporary Protection Orders | General |
| Thermos Plastic Olefin | General |
| The Prince Orono | General |
| Technical Project Officer | General |
| The Property Ombudsman | General |
| The Power Of | General |
| Third Party Origination | General |
| True Product Offering | General |
| Tally Pissed Off | General |
| Two Pain Organized | General |
| Tool Performance Optimization | General |
| Time Place Occasion | General |
| Third Party Organizations | General |
| Temperature Programmed Oxidiation | General |
| Treatment Payment Operations | General |
| Treatment Protection Organization | General |
| Thermo Plastic Polyolefin (often applied to elastomers) | General |
| Thermal Plastic Olefin | General |
| Thermoplastic Olefin | General |
| Travelling Post Office | General |
| Traffic and Process Office | General |
| Transfer Post Office | General |
| to The Pritzker Organization | General |
| Time Price Opportunity | General |
| Temporary Protection Order | General |
| The Pritzker Organization | General |
| Tree Preservation Order | General |
| Temporary Protective Order | General |
| Timber Product Output | General |
| Teaching Professionals Olympiad | General |
| Third Party Operations | Governmental |
| Third Party Only | Governmental |
| Town Police Officer | Governmental |
| Transportation Planning Organization | Governmental |
| Trillium Party of Ontario | Governmental |
| TANTPUR | Indian Railway Station |
| Turn Page Over | Internet |
| Tele-printer Operator | Jobs |
| Thyroid Peroxydase - anibody | Medical |
| thyroperoxidase | Medical |
| Transcultural Physicosocail Organization | Medical |
| Triple Pelvic Osteotomy | Medical |
| Treatment, Payment, Operation | Medical |
| Treatment Payment Options | Medical |
| Treatment, Payment, and Operations | Medical |
| Thyroid Peroxidase | Medical |
| thrombopoietin | Medical |
| temporoparietaloccipital disconnection | Medical |
| Time, Place, and Occasion | Messaging |
| Tacsim Program Office | Military and Defence |
| Technical Publications Office | Military and Defence |
| Task Performance Observation | Military and Defence |
| Thaad (theater High Altitude Area Defense) Project Office | Military and Defence |
| Transmitter Power Output | Radio Science |
| Test Program Outline | Space Science |
| Technology Partnerships Office | Technology |
