DAT

DAT or Dat may refer to:

Biology

 * Direct agglutination test, any test that uses whole organisms as a means of looking for serum antibody
 * Direct antiglobulin test, one of two Coombs tests
 * Dopamine transporter or dopamine active transporter, a membrane-spanning protein

Education

 * Dental Admission Test, taken by dental school candidates the US and Canada
 * Design and Technology, school subject in primary and secondary school

Technology

 * .dat, computer filename extension, typically for a file considered to contain data
 * dat (software), a decentralized data tool for distributing data small and large.
 * DAT Solutions, or Dial-A-Truck, provider of electronic transportation information
 * Digital Audio Tape, an audio recording and playback medium
 * Double acting tanker, a type of icebreaking tanker ship
 * Dynamic Acceleration Technology, increases single-threaded performance on multi-core processors
 * Dynamic Address Translation, IBM's term for virtual memory mapping: Virtual memory

Transport

 * DAT Danish Air Transport, an airline based in Vamdrup, Denmark
 * DAT, the IATA code for Datong Yungang Airport in Shanxi Province, China
 * DAT, the ICAO code for Canadian airline Lynx Air
 * DAT, the National Rail code for Datchet railway station in the county of Berkshire, UK
 * Delta Air Transport, former Belgian airline
 * Delivered at Terminal, a former Incoterms term whereby the seller pays all transport costs

Media and entertainment

 * Day After Tomorrow (band), a 3-member J-pop band under the Avex label
 * Dat (song), a song written and recorded by Pluto Shervington
 * DAT (newspaper), a Kazakh news source

Other

 * Abbreviation for grammatical dative case
 * Desk appearance ticket, a New York order to appear in criminal court
 * Disaster Action Team, the local disaster response unit of the American Red Cross
 * Drug action teams, involved in applying UK drugs policy
 * Dolphin-assisted therapy, swimming with dolphins as a therapy
 * DAT (chemotherapy) is a regimen that consists of Daunorubicin, Ara-C (cytarabine) and Thioguanine
 * Divergent Association Test (DAT) is a psychological creativity test