STP usually refers to:

• Stone Temple Pilots, an American rock band
• Standard Temperature and Pressure, definition

STP may also refer to:

• Straight Through Processing, banking term where a financial transaction is automatically completed without manual intervention
• Segment, Target and Position, a marketing^{[broken anchor]} 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

• 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

• 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

• 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

• 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

• 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

• 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

This disambiguation page lists articles that are about something that can be called STP. If an internal link led you here, you may wish to change the link to point directly to the article meant.