STL
- Council for Religious and Life Stance Communities
- Licentiate of Sacred Theology
- STL (file format)
- Saint Lucia
- Send the Light
- Société de transport de Laval
- Société de transport de Lévis
- Southall railway station
- Soviet Top League
- Space Technology Laboratories
- Special Tribunal for Lebanon
- Spurious trip level
- St. Louis
- St. Louis Blues
- St. Louis Cardinals
- St. Louis Lambert International Airport
- St. Thomas League
- Standard Telecommunication Laboratories
- Standard Template Library
- Statement List
- Stella Mwangi
- Studio transmitter link
- Suara Timor Lorosae
- Thousand Lights metro station