Juday can be a nickname, a given name, or a surname. Notable people with the name include:
Nickname Judy Ann Santos (born 1978), Filipino actress and film producer
Given name Juday al-Kirmani (fl. 736–747), Umayyad Caliphate commander
Surname Chancey Juday (1871–1944), American limnologist Richard Juday, co-inventor of the White–Juday warp-field interferometer Robert Juday (1900–1988), American high jumper Steve Juday (born c. 1945), American football quarterback