PTT may refer to:

Businesses and organizations

  • PTT Public Company Limited, a Thai oil and gas company
  • Pashtun Tahafuz Tehrik, a human rights movement in Pakistan
  • Pennsylvania Tunnel and Terminal Railroad, the New York Penn Station tunnel owner
  • Pizza Time Theatre (now Chuck E. Cheese's), an American entertainment restaurant chain
  • Police Tactical Team, Singapore
  • Postal, telegraph and telephone service, a type of government agency
  • Posterijen, Telegrafie en Telefonie (Netherlands)
  • Postes, télégraphes et téléphones (France)
  • PTT (Switzerland)
  • Posta Telgraf Teşkilatı (Turkey)
  • Prince's Trust Team, a British charitable youth programme

Music

  • "PTT (Paint the Town)", a 2021 single by Loona
  • Pull Tiger Tail, a British indie band (2006–2009)

Science

  • Partial thromboplastin time, a coagulation measure
  • Photothermal Therapy, a treatment
  • Photothermal time, in plants
  • 2β-propanoyl-3β-(4-tolyl)-tropane, a cocaine analogue
  • Polytrimethylene terephthalate, a polyester
  • Pulse Transit Time, a blood pressure measure

Technology

  • PTT Bulletin Board System, a Taiwanese forum
  • Pneumatic tube
  • Push to talk (or "Press-to-Transmit"), in telecommunications
  • Pass-the-ticket, in hacking

Other uses

  • Petronas Twin Towers, Kuala Lumpur, Malaysia
  • Port Talbot Town F.C., a Welsh association football club
  • Power transition theory, an international relations theory