Other
- Acura TL, a mid-size luxury car
- Liquidus temperature, the maximum temperature at which crystals can co-exist with the melt
- Target language
- Teelöffel or theelepel, a German and Dutch word for "teaspoon"
- Teknisk Landsforbund, the Danish Union of Professional Technicians
- Template Link
- Télé Liban, a Lebanese television network
- Territorial Level, a classification for regions by the OECD
- The Times Leader, a daily newspaper in Wilkes-Barre, Pennsylvania, United States
- Thallium, the chemical element of atomic number 81
- the total length in fish measurements
- Trade last, an exchange of repeated compliments
- Transform, clipping, and lighting or T&L, a term used in computer graphics
- Turbocharged Leyland, an engine produced for Leyland Tiger buses
- Turn Left (newspaper), a liberal independent student publication at Cornell University
- Tl (digraph), a digraph representing a voiceless alveolar lateral affricate in some languages
- Thermoluminescence
- Thermoluminescence dating
- Team Liquid
- Translator
- Tramways lausannois
- Volkswagen TL, a compact car produced in the 1960s and 1970s
- the Turkish Lira sign
- STAR Plus' & Balaji Telefilms', one of the most Successful and Popular TV Series Tere Liye
- TL, often short form of "Timeline" when used on Twitter or Google+.
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