TSD

• TSD Desalination, an Israeli start-up
• Telluride School District R-1
• Texas School for the Deaf, U.S.
• Transylvanian Society of Dracula
• Turin School of Development, Italy
• University of Wales Trinity Saint David, a university in the U.K.

• Technical Services Division, another term for the U.S. CIA's Office of Technical Service
• Treatment, Storage, and Disposal Facility; see HAZWOPER
• Treasury Solicitor's Department, U.K.
• Trilateral Security Dialogue, part of the Quadrilateral Security Dialogue
• Technical Support Division ad hoc Indian Army Intelligence Unit.

• Target-to-skin distance, a measurement in external beam radiotherapy
• Tay–Sachs disease, a genetic disorder, fatal in its most common variant
• Temperature-dependent sex determination
• Thermionic specific detector, another term for nitrogen–phosphorus detector
• Total sleep deprivation, a parameter in sleep and memory studies

• TSD (band), a 1990s girl band
• TSD rally (time-speed-distance), a type of motorsport rally
• ISO 639:tsd or Tsakonian, a modern Hellenic language which is highly divergent from other spoken varieties of Modern Greek
• Tang Soo Do, a Korean martial art
• Text, Speech and Dialogue, an international conference held in the Czech Republic
• Toshiba Telecommunication Systems Division, Irvine, California
• Turtle saving device, another term for turtle excluder device

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