| Acronym | Definition |
|---|
| PTU | Punjab Technical University (India) |
| PTU | Participación de los Trabajadores en las Utilidades (Spanish: Employee Participation in Earnings) |
| PTU | Propylthiouracil |
| PTU | Police Tactical Unit (Hong Kong) |
| PTU | Pci to Usb |
| PTU | Portable Training Unit |
| PTU | Power Transfer Unit (aircraft hydraulic backup system) |
| PTU | Paroxysmal Tonic Upgaze (neuro-ophthalmological syndrome) |
| PTU | Physical Training Uniform |
| PTU | Programmable Timing Unit (imaging) |
| PTU | Périmètre de Transport Urbain (French: Urban Transportation Perimeter) |
| PTU | Pan Tilt Unit |
| PTU | Propylene Thiourea (chemical) |
| PTU | Portable Test Unit |
| PTU | Providence Teachers Union |
| PTU | Polskie Towarzystwo Ubezpieczeñ (Polish Value Added Tax) |
| PTU | Prise de Terrain en U (aeronautics) |
| PTU | Participating Test Unit |
| PTU | Process Technology Utilization |
| PTU | Pyay Technological University (Myanmar) |
| PTU | Portable Terminal Unit |
| PTU | Paper Tape Unit |
| PTU | Parallel Transfer Unit |
| PTU | Port Transducer Unit |