STL

STL may refer to:

Organisations

 * Council for Religious and Life Stance Communities (Samarbeidsrådet for Tros- og Livssynssamfunn), Norway
 * Send the Light, a British Christian book distributor
 * Space Technology Laboratories, a former division of TRW Inc.
 * Special Tribunal for Lebanon, an international criminal tribunal
 * Standard Telecommunication Laboratories, a former UK research centre for Standard Telephones and Cables

Places

 * St. Louis, Missouri, US
 * St. Louis Cardinals, the city's Major League Baseball team
 * St. Louis Lambert International Airport (IATA airport code: STL)
 * Saint Lucia (UNDP country code)

Science and technology

 * Studio transmitter link, of a radio or television station
 * Spurious trip level, of a safety or alarm system

Computing

 * Standard Template Library, originally for the C++ programming language
 * .stl, a file format for subtitles
 * STL (file format), a file format for 3D CAD models
 * Statement List, programming language for Siemens SIMATIC S7

Transportation

 * Société de transport de Laval, public transit in Laval, QC, Canada
 * Société de transport de Lévis, public transit in Lévis, QC, Canada
 * Southall railway station (National Rail station code: STL)

Other uses

 * Stella Mwangi (born 1986), Norwegian-Kenyan singer also known as STL
 * Licentiate of Sacred Theology (Sacrae Theologiae Licentiatus), a degree in Catholic religious studies
 * Suara Timor Lorosae, a newspaper in East Timor