Gen may refer to:

  • Gen (film), 2006 Turkish horror film directed by Togan Gökbakar
  • Gen language, the language of Togo
  • Gen (Street Fighter), a video game character from the Street Fighter series
  • Gen Fu, a video game character from the Dead or Alive series
  • Chief Gen-san from Sky Girls
  • Gen Otori, Ultraman Leo's alter ego from the 1974 namesake tokusatsu
  • Gen Nakaoka, the eponymous character from Barefoot Gen, a Japanese anti-war manga first published in 1973 with various adaptations

Gen. or GEN may refer to: