OTP may refer to

Businesses and organizations

  • OTP Bank (originally Országos Takarék Pénztár), independent financial services providers in central and eastern Europe
  • OTP Ingatlanpont, Hungarian real estate brokerage firm
  • Office of Technology Policy, U.S. government office
  • Office of Telecommunications Policy, U.S. government office 1970–1978
  • Office of Transport and Traffic Policy and Planning, department of the Thai Government
  • Old Town Pizza, pizzeria in Portland, Oregon, U.S.

Technology

  • One-time pad, in cryptography
  • One-time password or one-time PIN, a password or PIN that is valid for only one login session or transaction
  • One-time programmable memory, a type of programmable read-only memory (ROM) in electronics
  • Open Telecom Platform, a collection of middleware, libraries, and tools written in Erlang programming language
  • Opposite Track Path, in optical technology such as DVD or Blu-ray
  • Over-temperature protection, a feature of modern computer power supply units

Transportation

  • Henri Coandă International Airport (IATA: OTP), in Bucharest, Romania
  • On-time performance, the level of success of the service (such as a bus or train) remaining on the published schedule

Other uses

  • Oulun Työväen Palloilijat, a Finnish football and bandy club
  • "One true pairing", a term used in media fandom
  • "Outside the perimeter", used by residents of Atlanta to refer to suburban areas outside Interstate 285
  • Opioid Treatment Program, a legal designation for methadone clinics in the United States.
  • Office of the President (disambiguation)