Pittsburgh Public Theater

Program Properties Table in mainframes.

Parts per trillion - a measure of concentration (see Parts per notation)

Professional Poker Tour

The three-letter acronym PPT may stand for:

Precipitate - the formation of a solid in a solution during a chemical reaction.

Positive Partial Transpose criterion, in quantum mechanics.

The Plunge Protection Team, a nickname of the President's Working Group on Capital Markets.

Pulsed plasma thruster - A form of electric propusion for space vehicles that allows very fine control.

DL-Phosphinotricin - An herbicide.

The Share symbol for Putnam Premier Income Trust

Microsoft PowerPoint, a Microsoft program intended to construct presentations, files have the extension .ppt 

ppt, a BSD program to "reformat input as paper tape"

The IATA airport code for Faa'a International Airport in Papeete, Tahiti, French Polynesia.

The Parti Progressiste Tchadien or Chadian Progressive Party, a political party active in Chad between 1947 and 1973

Polypyrimidine tract, a region of messenger RNA.

Homeland for All ( Spanish:Patria Para Todos , PPT) is a left-wing political party in Venezuela.