Birn or variants may refer to:

BIRN

  • Biomedical Informatics Research Network (BIRN), a geographically distributed virtual community of shared resources relating to diagnosis and treatment of disease
  • Balkan Investigative Reporting Network
  • Berklee College of Music Internet Radio Network

Birn or Birns

  • Alex Birns (1907–1975), Jewish American mobster
  • Jack Birns (1919-2008), American photographer
  • Jerry Birn (1923-2009), American television writer
  • Laura Birn (born 1981), Finnish actress
  • Laura Bryan Birn (born 1965), American actress

Other uses

  • Dál Birn
  • Lóegaire Birn Búadach, Óengus Osrithe's son
  • Nem Moccu Birn (died 654), Irish saint