L3, L03, L.3 or L-3 may refer to:

In arts and media

  • Live, Loud & Local, a show launched by band The Matches in the Oakland, California region
  • Leprechaun 3, a film
  • L3-37, a droid in Solo: A Star Wars Story
  • Lower third, in television and film a graphic overlay placed in the title-safe lower area of the screen.

Businesses

  • L3 Technologies, an American electronics and defence company
  • L3Harris Technologies, the successor to L3 Technologies following the merger with Harris Corporation in 2019
  • DHL De Guatemala (IATA code L3), a cargo airline based in Guatemala
  • LTU Austria (IATA code L3), an airline based in Austria

In science and technology

Biology and medicine

  • L3, the third lumbar vertebra, in human anatomy
  • the third larval stage in the Caenorhabditis elegans worm development
  • ATC code L03 Immunostimulants, a subgroup of the Anatomical Therapeutic Chemical Classification System
  • Haplogroup L3 (mtDNA), a human mitochondrial DNA (mtDNA) haplogroup generally found in East Africa

Computing and telecommunications

  • L-3, an L-carrier cable system developed by AT&T
  • L3 microkernel, a microkernel operating system by German computer scientist Jochen Liedtke
  • The Level-3 CPU cache in a computer
  • ISO/IEC 8859-3 (Latin-3), an 8-bit character encoding
  • L3 technical support, the highest level dealing with the most difficult or advanced problems.

Transportation

Air- and spacecraft

  • Aeronca L-3 Grasshopper, a light airplane used by the USAAF during World War II
  • Avia L.3, an Italian plane used for training by the Regia Aeronautica
  • Macchi L.3, a 1916 Italian biplane flying boats
  • Soyuz 7K-L3, a crewed lunar lander design type in Russia's Soyuz space program
  • N1/L3, the Soviet crewed lunar landing program

Other modes of transportation

  • L3/33 and L3/35, Italian tankettes used in World War II
  • L03, a Chevrolet Small-Block engine model
  • Soviet submarine L-3, a 1931 Leninets class minelayer submarine
  • SP&S Class L-3, an 1883 steam locomotives class
  • L3 (New York City bus), a temporary bus route in New York City
  • LNER Class L3, a class of British steam locomotives
  • The Kingsford branch of the CBD and South East Light Rail in Sydney, Australia, is numbered L3
  • L3, an S-Bahn line of the Léman Express in Switzerland and France

Other uses in science and technology

  • L3, a form of low-alloy special purpose steel
  • L3 (CERN), one of the four detectors of the Large Electron-Positron Collider
  • L<sup>3</sup> (length^3), volume
  • The third Lagrange Point in a gravitational system
  • Latitude/Longitude Locator, an STS-32 Space Shuttle mission experiment

See also

  • 3L (disambiguation)
  • LLL (disambiguation)
  • Level 3 (disambiguation)
  • L band, radio frequencies in the electromagnetic spectrum