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
 * 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