Fahey is a surname. Notable people with the surname include:
Brandon Fahey, American baseball playerBrian Fahey (composer), British musical directorBrian Fahey (ice hockey), American ice hockey playerDavid M. Fahey, American professor of historyDenis Fahey, Catholic priestFrank Fahey, Irish politicianJames Charles Fahey (1903–1974), American author and publisherJeff Fahey, American actorJohn Fahey (musician), American guitarist and composerJohn Fahey (politician), Australian politicianJohn M. Fahey, Jr., president and chief executive officer of the National Geographic SocietyJoseph Fahey, American Roman Catholic theologianJulie Fahey, American politicianKeith Fahey, an association football player for Birmingham CityMary-Anne Fahey, Australian actor, comedian and writerMike Fahey, American mayorRobert Fahey, Australian real tennis playerSiobhan Fahey (born 1958), Irish singer and musicianTerry Fahey, Australian rugby league footballer