Janis may refer to:

• Janis (film), a 1974 film about Janis Joplin
  • Janis (1975 album), a compilation and the soundtrack album for the film
  • Janis (1993 album), a Joplin career overview collection
• "Janis", a track recorded by Focus on their 1971 album Focus II

• Janis Gold, in the TV series 24
• Janis Day, in the comic strip Arlo and Janis
• Janis Hawk, in the TV series FlashForward
• Janis Ian, in the film Mean Girls
• Janis (ジャニス, "Janisu"), in Inuyasha: Secret of the Divine Jewel

• Janis (given name)
• Jānis, a Latvian masculine given name
• Byron Janis (born 1928), American concert pianist (no relation to Conrad Janis)
• Conrad Janis (1928–2022), American actor and jazz musician (no relation to Byron Janis)
• Dorothy Janis (1912 –2010), American silent film actress
• Elsie Janis (1889–1956), American musical theatre and vaudeville performer
• Irving Janis, a social psychologist who pioneered the groupthink theory
• Jaroslav Janiš, Czech auto racing driver
• Linzie Janis, an American television journalist
• Sidney Janis, (1896–1989), American art dealer, collector, and writer
• Vivi Janiss (1911–1988), American actress

• All pages with titles beginning with Janis
• All pages with titles containing Janis
• Janus (disambiguation)
• Jani (disambiguation)
• Janice (disambiguation)
• United States v. Janis, a 1976 U.S. Supreme Court case