PDT

PDT may refer to:

Computing

 * PHP Development Tools, an IDE plugin for the Eclipse platform
 * PDT Standard Police Digital Trunking, China's police wireless communications standard
 * Portable data terminal, an electronic device that is used to enter or retrieve data via wireless transmission

Science and medicine

 * Patient-delivered therapy
 * Photodynamic therapy, treatment for cancer and wet age-related macular degeneration, involving a photosensitizer, light, and tissue oxygen
 * Population doubling time, a number indicating cell growth in cell cultures
 * Pancreaticoduodenal transplantation (see Pancreas transplantation)
 * 1,3-Propanedithiol, an organosulfur compound

Business and finance

 * Paramount Domestic Television, United States television series distributor, now CBS Television Distribution
 * Piedmont Airlines (ICAO airline code), an American regional airline
 * PDT Partners, a hedge fund company in New York City that was formerly the trading division of Morgan Stanley
 * Pattern day trader (also Pattern day trading, PDT violation), a stock trader who frequently buys and sells a security within the same trading day

Organizations

 * Partido Democrático Trabalhista (Democratic Labour Party), a political party of Brazil
 * Phi Delta Theta, an international fraternity

Linguistics

 * Prague Dependency Treebank, a subset of the Czech National Corpus
 * Plautdietsch (ISO 639-3 language code), a Low Prussian variety of East Low German, with Dutch influence

Other

 * Please Don't Tell, a cocktail bar in New York City
 * Pacific Daylight Time (UTC−7), daylight saving time in western North America
 * Eastern Oregon Regional Airport (IATA airport code), near Pendleton, Oregon
 * Potentially dangerous taxpayer, an American taxpayer that has demonstrated a capacity for violence against the IRS
 * Peter Dengate Thrush, New Zealand barrister
 * psychedelic trip, a psychedelic experience