STP

STP may refer to:

Places

 * São Tomé and Príncipe (ISO 3166-1 alpha-3 code, IOC country code, and FIFA country code STP)
 * St Pancras railway station (National Rail code STP)
 * St. Paul Downtown Airport (IATA airport code STP) in Saint Paul, Minnesota, US
 * South Texas Nuclear Generating Station, also known as the South Texas Project

Businesses and organizations

 * German Union of Saddlers, Upholsterers and Portfolio Makers, a former German trade union
 * STP (motor oil company)
 * Segmenting-targeting-positioning, a framework in marketing
 * Society for Threatened Peoples, an international NGO
 * Space Test Program, a spaceflight provider for US DoD
 * Straight-through processing, in securities transaction
 * Suntech Power (NYSE symbol STP)

Drugs

 * 2,5-Dimethoxy-4-methylamphetamine, also called DOM or "serenity, tranquility, and peace"

Entertainment

 * Star Trek: Picard (2020 TV series), an American science fiction TV series
 * Star Trek: Prodigy (2021 TV series), an American science fiction children's TV series

Music

 * Stone Temple Pilots, an American rock band
 * "S.T.P.", a song on the album Robbin' the Hood by the band Sublime
 * STP, an American band with Julia Cafritz

Computing

 * ISO 10303-21, the STEP CAD exchange file extension
 * Serial ATA Tunneling Protocol, supporting SATA devices in SAS bays
 * Server Time Protocol, to synchronize clocks
 * Shielded twisted pair, a type of cable
 * Signal Transfer Point, an SS7 packet switch
 * Spanning Tree Protocol, a network protocol used for loop prevention
 * Schedule Transfer Protocol, a network protocol designed for low-latency data transfer
 * Software Technology Parks of India
 * Straight-through processing, without repeating data entry for a financial transaction

Medicine

 * Scientist Training Programme, a UK healthcare training scheme under Modernising Scientific Careers
 * Sustainability and transformation plan, a scheme in NHS England

Other uses in science and technology

 * Standard temperature and pressure, 0 °C and 100 kPa
 * Sewage Treatment Plant, a site where wastewater is cleaned
 * Shovel test pit, a method of archaeological survey
 * Sodium triphosphate, used in detergents, etc.
 * Stand-to-pee device, a female urination device
 * Solar Terrestrial Probes program, a series of NASA missions

Other uses

 * Sacrae Theologiae Professor, a Catholic degree
 * Seattle to Portland Bicycle Classic
 * Soviet-type economic planning
 * 25 metre standard pistol, a shooting sport
 * Sticky toffee pudding