STP

STP usually refers to:
 Stone Temple Pilots, an American rock band
 Standard Temperature and Pressure, definition

STP may also refer to:

 Commercial 
 Straight Through Processing, banking term where a financial transaction  is automatically completed without manual intervention
 Segment, Target and Position, a marketing acronym
 STP (motor oil company), a brand name and trade name for the automotive additives and performance division of Armored AutoGroup
 STP, New York Stock Exchange symbol for Suntech Power Holdings, a Chinese manufacturer of photovoltaic cells

 Geographical 
 STP, IATA airport code for St. Paul Downtown Airport in Saint Paul, Minnesota
 STP, ISO 3166-1 alpha-3 code, IOC country code, and FIFA country code for São Tomé and Príncipe
 STP, National Rail code for London St Pancras (Domestic) railway station

 Medicine 
 Status post, sometimes abbreviated as st.p., used to discuss sequelae with reference to their cause
 Sternal puncture, a form of bone marrow examination
 Scientist Training Programme, the postgraduate training for Healthcare scientists in the UK introduced under Modernising Scientific Careers

 Music 
 The Rolling Stones American Tour 1972, popularly referred to as the "STP Tour" for "Stones Touring Party"
 "S.T.P.", a song on the album Robbin' the Hood by ska punk/reggae band Sublime

 Science, math and technology 
 Standard conditions for temperature and pressure, a scientific convention of designating standard conditions
 Scalar triple product
 Sewage treatment plant
 Shielded twisted pair, a type of cable
 Shovel test pit, method for archaeological survey
 Signal Transfer Point, an SS7 packet switch
 Sodium tripolyphosphate, a preservative
 South Texas Nuclear Generating Station, aka South Texas Project, nuclear power station located southwest of Bay City, Texas
 Space Test Program, a program conducted by the USAF Space Development and Test Wing at Kirtland Air Force Base
 Spanning tree protocol, a network protocol providing a loop free topology for a LAN or bridged network
 Steiner tree problem in graphs
 Strategic Technology Plan
 ISO 10303-21, the STEP CAD exchange format, uses the file extension .stp

 Sports and recreation 
 25 metre standard pistol, a shooting sport
 STP, a brand of bicycles marketed by Giant Bicycles
 Seattle to Portland Bicycle Classic, an annual one- and two-day supported bicycle ride from Seattle, Washington to Portland, Oregon

 Other uses 
 Sacrae Theologiae Professor, or Professor of Sacred Theology (possibly archaic)
 Society for Threatened Peoples a human rights group based in Göttingen, Germany
 STP, slang name for the psychedelic 2,5-Dimethoxy-4-methylamphetamine, also known as DOM