Landy is a surname. Notable people with the surname include:
Alvin Landy (bridge), American contract bridge player and administrator, inventor of the Landy covention
Eugene Landy, American psychologist and therapist
Derek Landy, Irish author and screenwriter
John Landy, namesake of Landy Field, Geelong
Michael Landy, visual artist
Sandra Landy (1938-2017), English world champion contract bridge player
It is occasionally a given name. Notable people with the given name include:
Landy Wen, Taiwanese pop singer
