Gen may refer to:

  • Gen (film), 2006 Turkish horror film directed by Togan Gökbakar
  • Gen (Street Fighter), a video game character from the Street Fighter series
  • Gen Fu, a video game character from the Dead or Alive series
  • Gen language, the language of Togo
  • Gen-san, a character in the anime series Sky Girls
  • Gen Tomii (富井 彦, born 1973), Japanese Nordic combined skier
  • Gen Hoshino (星野 源, born 1981), Japanese singer-songwriter, musician, actor, and writer
  • Gen Shoji (昌子 源, born 1992), Japanese footballer
  • Gen Urobuchi (虚淵 玄, born 1972), Japanese novelist, visual novel writer and anime screenwriter
  • Gen Fukunaga (福永 元, born 1962), Japanese engineer and businessman
  • Gen Nakatani (中谷 元, born 1957), Japanese politician
  • Gen Horiuchi (堀内 元), Japanese ballet dancer and choreographer

Gen. or GEN may refer to: