DST (disambiguation)

DST is daylight saving time, a seasonal adjustment to civil time.

DST may also refer to:

Academia

 * Delta Sigma Theta, an American organization of college-educated women
 * Doctor of Sacred Theology, highest qualification in Roman Catholic theology

Businesses

 * DST Systems, an American technology company
 * Digital Signature Trust Company, a cryptographic root certificate authority (now owned by IdenTrust)
 * Digital Sky Technologies, a Russian investment firm

Government, law and military

 * Defence School of Transport, Leconfield, Yorkshire, England
 * Defence Science and Technology Group, ancillary Australian national security agency
 * Delaware statutory trust
 * Department of Science and Technology (South Africa)
 * Department of Science and Technology (India)
 * Direction de la surveillance du territoire, defunct French intelligence agency
 * Direction générale de la surveillance du territoire, Moroccan intelligence agency

Mathematics

 * Dempster–Shafer theory, in probabilistic logic, a model of uncertainty
 * Descriptive set theory, in logic
 * Discrete sine transform, a Fourier transform variant
 * Dynamical systems theory, related to chaos theory

Science

 * Descending subtraction task, a clinical cognitive test
 * Developmental systems theory, an evolutionary biology framework
 * Dexamethasone suppression test, in endocrine medicine, a measure of adrenal gland function
 * Dialogical self theory, in psychology
 * Disturbance storm time index, in aeronomy, a measure of space weather near Earth
 * Dystonin, a protein relevant to neurology and its related human gene

Technology

 * Data Storage Technology, a 1992 magnetic-tape data-storage format
 * Decision support tool, see Decision support system
 * Deep Space Transport, a crewed interplanetary spacecraft concept
 * Digital signature transponder, Texas Instruments' RFID device
 * Direct Stream Transfer, a lossless audio compression format used by SACD
 * Douglas Sleeper Transport, a 1940s aircraft model (precursor to the Douglas DC-3)
 * Drill stem test, in oil exploration