DSD

DSD may refer to:

Science and research

 * Detrusor sphincter dyssynergia, disorder of urination
 * Disorders of sex development, differences of sex differentiation
 * Definitive Screening Design, an experimental design for multiple variables

Technology

 * Data structure diagram of a data model
 * Direct Stream Digital, Sony and Philips digital recording trademark
 * Document Structure Description, a schema language for describing valid XML

Organizations

 * Defence Signals Directorate, an Australian intelligence agency
 * Department for Social Development
 * Det Stavangerske Dampskibsselskap, a Norwegian transport and shipping company
 * Drainage Services Department, Hong Kong
 * Davis School District, Utah
 * Delaware School for the Deaf

Government

 * United States District Court for the District of South Dakota, abbreviation in case decisions
 * Downing Street Declaration, by UK PM and Irish Taoiseach
 * New Zealand Distinguished Service Decoration, a medal awarded by the New Zealand Defence Force

Media

 * Do Something Different, a British CBBC television show
 * DSD, a group on the album Thug Misses

Other uses

 * Defence Studies Department (King's College, London)
 * Deutsches Sprachdiplom (German Language Diploma), of the German Academic Exchange Service
 * Direct store delivery, without 3rd party distributor
 * Discover Scuba Diving program
 * Driver's Safety Device, or dead man's switch
 * Raindrop size distribution in rain, snow, etc...
 * Dsd, the Köppen climate classification for an extremely rare subarctic climate variant with dry summers and extreme winters