DL, dL, or dl may stand for:

Science and technology

Electronics and computing

  • , an HTML element used for a definition list
  • Deep learning, a field of 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

  • ⟨dl⟩, a digraph; see List of Latin script digraphs.
  • 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)
  • Pangdonglai, retail corporation in Xuchang, Henan, China

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
  • Diamond League, track and field league

Other uses

  • Deputy Lieutenant, a British title
  • Diaper lover, a fetish
  • Dimension Lengthwise, an International standard size of an envelope (110mm × 220mm, holds 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
  • Sangihe and Talaud Islands (vehicle registration prefix DL)