TDL

• Technical Design Labs, a former microcomputer- and software company
• Texas Digital Library, a consortium of institutions
• TDL Group, former company name of Tim Hortons

• Tokyo Disneyland, Japan
• Tandil Airport (IATA code), Argentina
• Tundla Junction railway station (Station code), India

• To-do list
• Tactical Data Link, in military communication
• Tomodachi Life, a 2013 life simulation video game
• Toxic Dose Low, in toxicology
• Sur language (ISO 639-3 code: tdl), a Plateau language of Nigeria

• Temporal difference learning (TD), a prediction method
• Tunneled Direct Link Setup (TDLS)
• Two Dimensional Logarithmic Search (TDLS)
• Tunable diode laser absorption spectroscopy (TDLAS)

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