Gein may refer to:
People Ed Gein (1906–1984), American murderer Gidget Gein (1969–2008), American musician and artist
Other uses Ed Gein (band), a Syracuse grindcore band named after the serial killer Gein metro station, also neighbourhood, in Amsterdam-Zuidoost Gein, comic book character from Rurouni Kenshin, see list of characters Special Intelligence Group (GEIN), a defunct intelligence agency in Peru