PTU may refer to: Science and medicine Paroxysmal tonic upgaze, ophthalmological disorder Phenylthiourea, an organosulfur thiourea Power transfer unit, for aircraft hydraulic systems Propylthiouracil, a hyperthyroidism drug Universities Puducherry Technological University, Pondicherry, India Punjab Technical University, Jalandhar, India Pyay Technological University, Burma Organizations Australian Rail Tram and Bus Industry Union or Public Transport Union Hong Kong Professional Teachers' Union Paratroop Training Unit RAAF, during WWII Plumbing Trades Union, UK Other uses PTU (film), Hong Kong, 2003 Platinum Airport, Alaska, US, IATA code Police Tactical Unit Professional technical school (Russian: ) in the Soviet Union , value-added tax in Poland See also Police tactical unit (disambiguation)