TSD
# TSD

TSD may refer to:

## Businesses and organizations

* 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.

## Government

* 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.

## Science and medicine

* 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

## Other uses

* 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
* .TSD file extension, for the graphics editor Tile Studio
* 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
