PT

PT, Pt, or pt may stand for:

• Lead titanate, PbTiO_3, an abbreviation for a ferro-, pyro- and piezoelectric perovskite
• .pt, Internet country code top-level domain (ccTLD) for Portugal
• Patient, a medical abbreviation
• Peat's symbol in the Unified Soil Classification System
• Periodic table
• Perpetual traveler, Permanent Tourist, or Prior Taxpayer
• Physical therapy
• Physical training, US military term for its exercise programs
• Platinum, an atom
• Polythiophene, a molecule
• Porcupine Tree, a British progressive rock group.
• Portugal's ISO country code
• Portugal Telecom
• Portuguese language
• Prothrombin time, a measurement of blood coagulation
• PT boat, a type of small fast ship used by the US Navy in World War II
• Pulau Tiga, an island in South China Sea
• Worker's Party (Brazil) ("Partido dos Trabalhadores")