PTT

PTT may refer to:

Chemistry and medicine

• Partial thromboplastin time, a performance indicator in medicine for coagulation status
• Photothermal Therapy, A method of using light and photosensitizers for medical treatments
• 2β-propanoyl-3β-(4-tolyl)-tropane a cocaine analogue
• Polytrimethylene terephthalate, polyester

Communication and technology

• Postal Telephone and Telegraph, a government agency in many countries worldwide; specifically:
  • Posterijen, Telegrafie en Telefonie (Nederland), in the Netherlands
  • Postes, télégraphes et téléphones (France), in France
  • Postes, télégraphes, téléphones (Switzerland), in Switzerland
  • PTT (Turkey)
• Push to talk, also "Press-to-Transmit", a method of conversing on half-duplex communication lines
• PTT Bulletin Board System, the largest bulletin board system in Taiwan

Organizations

• PTT Public Company Limited, a Thai oil and gas company
• Pennsylvania Tunnel and Terminal Railroad, the owner of the tunnels to New York Penn Station
• Police Tactical Team, now Singapore Police Force's Special Tactics and Rescue unit
• Prince's Trust Team, a development programme for teenagers by partners of the Prince's Trust throughout the UK

Other

• Petronas Twin Towers in Kuala Lumpur, Malaysia
• Pull Tiger Tail, British indie band