Janus is the two-faced Roman god of gates, doors, doorways, beginnings, and endings.

Janus may also refer to:

Computing

  • Janus, a codename used for Windows 2000 (DEC Alpha and Itanium 64-bit editions)
  • Janus, a conflict simulation model, one of the world’s first near-real-time, player-interactive combat simulators
  • Janus (concurrent constraint programming language)
  • Janus (DRM), a Microsoft Digital Rights Management platform
  • Janus (protocol), a file transfer protocol for use on bulletin board systems
  • Janus (time-reversible computing programming language)
  • Janus attack, an alternative name of a Man-in-the-middle attack
  • JANUS clinical trial data repository, a standard supported by the U.S. Food and Drug Administration
  • Janus Recognition Toolkit (JRTk), a general purpose speech recognition toolkit

People

  • Janus (given name)
  • Janus (surname)
  • Janus Prospero from the Resident Evil film series
  • Janus of Cyprus (1375–1432), king of Cyprus from 1398 to 1432
  • Janus I, Duke of Masovia
  • J'anus, the claimed stage name of Janis McGavin, a performer on Balls of Steel Australia

Astronomy

  • , a shallow volcanic crater on Io, a moon of Jupiter
  • Janus (moon), a moon of Saturn
  • Janus (star), the name given to the hydrogen-helium faced white dwarf star ZTF J203349.8+322901.1

Performing arts

Music

  • Janus Records, a record label
  • Janvs, a black metal band from Liguria, Italy
  • Janus (musical project), a German darkwave musical project established 1995
  • Janus (American band), hard rock band, established in the mid-1990s in Chicago, Illinois
  • Janus (English band), progressive rock band established in 1969 in Krefeld, Germany
  • Janus (album), the first full-length album released by Boyfriend

Film

  • Janus Films, an American film distribution company
  • Janus, the criminal organization in the James Bond movie GoldenEye
  • The Janus Project, a taboo cloning project in the movie Judge Dredd

Other performing arts

  • Janus (play), a 1955 Broadway romantic comedy
  • Janus (TV series), an Australian drama television series

Printed media

Comics

  • Janus (comics), a list of characters
  • Janus (Marvel Comics), Marvel Comics character
  • Janus, DC Comics character known as Two-Face
  • Janus, character in the novel Angels & Demons

Other printed media

  • Janus (journal) (1896–1990), an academic journal on history of science and medicine published in Amsterdam
  • Janus (science fiction magazine), a feminist science fiction magazine published from 1975-1980
  • Janus: A Summing Up, a 1978 book by Arthur Koestler
  • The Janus branch of the Cahill family in The 39 Clues
  • Janus word or auto-antonym, a word with multiple meanings in which one is the reverse of another
  • Janus, a French poetry magazine published in Paris by Elliott Stein from 1950 to 1961
  • Janus (1971-2007), a British fetish magazine of erotic spanking and caning imagery.

Games and gaming

  • Janus Chess, a chess variant
  • Janus Zeal, a character in the game Chrono Trigger

Places

  • Janus Island, an island of the Palmer Archipelago, Antarctica
  • Mont Janus, a mountain near Mont Chaberton, France

Science

  • Janus (sawfly), a genus of stem sawflies in the family Cephidae
  • Janus-faced molecule, used to describe a molecule whose effects on organisms can vary between beneficial and toxic
  • Janus Experiments, a series of experiments on radio-sensitivity in mice and dogs
  • Janus kinase, an intracellular signalling molecule; component of the JAK-STAT signal system
  • Janus kinase inhibitor, a medication that inhibits the activity of the Janus kinase enzymes
  • Janus particle, an amphiphilic particle with a surface that is half hydrophilic half hydrophobic
  • Janus TMD monolayers, a type of asymmetric transition-metal dichalcogenide monolayers
  • Janus (spacecraft), a NASA mission to binary asteroids

Transportation and vehicular

  • Janus (1810 ship) (1810–1832), built in New York, U.S.
  • HMS Janus, a name used by British naval ships
  • Schempp-Hirth Janus, a German two-seater glider
  • Yorkshire Engine Company Janus, a British diesel shunting locomotive
  • Zündapp Janus, a bubble car model by Zündapp
  • Janus Motorcycles, a motorcycle manufacturer based in Goshen, Indiana

Other uses

  • Janus Capital Group, an investment company based in Denver, Colorado
  • Janus v. AFSCME, U.S. Supreme Court case (2018)
  • Society of Janus, a San Francisco-based BDSM education and support group
  • Janus, catalogue database of Cambridge University Library
  • Janus, a sculpture by Clement Meadmore created for the Ruta de la Amistad in Mexico City

See also

  • Janis (disambiguation)
  • Janice (disambiguation)
  • Janusz