Science and technology
* Peak-to-peak, an amplitude of a signal * Permeability transition pore, a mitochondrial channel protein complex * Post-tetanic potentiation, a short-lived form of synaptic plasticity * Post-transfusion purpura, a type of adverse reaction to a blood transfusion * Protein tyrosine phosphatase, a group of enzymesComputing
* PET Transfer Protocol, a file transfer protocol developed for Commodore-based bulletin boards * Picture Transfer Protocol, a protocol for digital cameras * Precision Time Protocol, a time synchronization protocolMusic
* PTP (artist collective), an American experimental music collective and record label * PTP (band) (Programming the Psychodrill), an American industrial music group, side project of Ministry * Pay Money to My Pain, a Japanese rock band * Phonation threshold pressure, the amount of air pressure required to initiate vibration of the vocal cordsOrganisations
* Pheu Thai Party, a political party in Thailand * Portuguese Labour Party, a left-of-centre political party in Portugal * Togolese Party of Progress, a defunct political party in TogolandPlaces
* Pointe-à-Pitre International Airport (IATA code), Guadeloupe * Port of Tanjung Pelepas, in Johor, MalaysiaOther uses
* Practitioner Training Programme, of the UK Modernising Scientific Careers initiative * Professional transportation planner, an American personal certification program * Publicly traded partnership, a limited partnership whose interests are regularly traded on an established securities market.See also
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