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 Outram Park MRT station (MRT station abbreviation: OTP), in Singapore 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)