DL

DL, dL, or dl may stand for:

Electronics and computing

 * , an HTML element used for a definition list
 * Deep learning, a branch of algorithm-based machine learning
 * Description logics, a family of knowledge representation languages
 * Delete Line (ANSI), an ANSI X3.64 escape sequence
 * Digital library, a library in which collections are stored in digital formats
 * Diode logic, a logic family using diodes
 * DVD-R DL, a DVD Dual Layer engineering method
 * DL register, the low byte of an X86 16-bit DX register
 * Dynamic loading, a mechanism for a computer program to load a library

Telecommunications

 * Data link, a computer connection for transmitting data
 * Distribution list, a function of e-mail clients
 * Downlink, the link from a satellite to a ground station
 * Download, a transfer of electronic data

Vehicles

 * Subaru DL, an automobile
 * Australian National DL class, a class of diesel locomotives built by Clyde Engineering
 * New Zealand DL class locomotive, a diesel-electric class built by Dalian Locomotive and Rolling Stock Company
 * Destroyer leader, a large naval vessel capable of leading a flotilla

Other uses in science and technology

 * Dimensionless quantity (dl, in lower case), the 'per unit' system of measurement
 * Decilitre (or deciliter, dL), a unit of measurement of capacity or volume
 * Discrete logarithms, in mathematics
 * Distance learning, Internet-based education
 * HPE ProLiant DL, density line servers
 * Dextrorotation and levorotation or D/L nomenclature, used in naming chemical compounds

Arts and entertainment

 * D.L. (play), a Bulgarian play
 * DL series, a series of adventures and some supplementary material for the Advanced Dungeons & Dragons role playing game
 * D. L. Hawkins, fictional character on the American television series Heroes
 * D. L. Hughley (born 1963), American actor and comedian
 * Directors Lounge, an ongoing Berlin-based film and media-art platform and/or its annual film festival
 * Dominant leittonwechselklänge

Business

 * Dai-ichi Life, an insurance company
 * Delta Air Lines (IATA airline code: DL)

Railroads

 * Delaware–Lackawanna Railroad in Pennsylvania, U.S.
 * District line, a London Underground line

Places

 * DL postcode area, Darlington, north-east England
 * County Donegal, Ireland
 * Delanggu railway station, a railway station in Indonesia (station code)
 * Detroit Lakes, Minnesota, US

Politics

 * Democracy is Freedom – The Daisy, a former political party in Italy
 * Drinking Liberally, a social organization that discusses politics in bars
 * Liberal Democracy (France) (Démocratie Libérale), a former political party in France
 * Rights and Freedom, a political party in Italy

Sports

 * Defensive lineman, an American/Canadian football player position
 * Disabled list, the former name of the injured list, a list of injured baseball players
 * Duckworth–Lewis method, a mathematical way to calculate the target score in cricket
 * Deadlift, a powerlifting move
 * Detroit Lions, a football team in the NFL

Other uses

 * Deputy Lieutenant, a British title
 * Diaper lover, a fetish
 * Dimension Lengthwise, an International standard size of an envelope (110mm × 220mm, holds ⅓ A4)
 * Doctor of Letters, a university degree
 * Down-low (disambiguation)
 * Driver's license, an official document which states that a person may operate a motorized vehicle
 * Number 550, in Roman numerals