Periodic Table of Elements

Private (rank) (Pte), an abbreviation used in Commonwealth countries

Portuguese escudo, the former official currency of Portugal

Passenger Transport Executive, a local government body responsible for public transport in the United Kingdom

Partido del Trabajo de España, the Party of Labour of Spain

Partido de los Trabajadores de Ecuador, the Workers' Party of Ecuador

Performance testing environment

Prairie Theatre Exchange, a theatre in Winnipeg, Manitoba, Canada

Phosphotriesterase, an enzyme