PDT may refer to:

Businesses and organisations

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

Computing

  • PHP Development Tools, an IDE plugin for the Eclipse platform
  • PDT Standard, a Chinese police wireless communications protocol
  • Portable data terminal, a mobile device

Linguistics

  • Prague Dependency Treebank, of the Czech National Corpus
  • Plautdietsch, spoken in Poland and Mexico (ISO 639-3:<code>pdt</code>)

Places

  • Please Don't Tell, a bar in New York City, US
  • Eastern Oregon Regional Airport, US (IATA:<code>PDT</code>)

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

Other uses

  • Pacific Daylight Time (UTC−7), daylight saving time in western North America
  • Pattern day trader, a previous designation for those following a stock-trading style
  • Peter Dengate Thrush, New Zealand barrister
  • Potentially dangerous taxpayer, an American taxpayer the IRS fear violence from