Gündüz or Gunduz is a masculine given name and a surname. Notable people with the name include:
Given name Gündüz Aktan (1941–2008), Turkish diplomat and politician Gunduz Caginalp (died 2021), American mathematician of Turkish descent Gündüz Gürol Azer (born 1980), Turkish football player Gündüz Kılıç (1919–1980), Turkish football player and coach Gündüz Tekin Onay (1942–2008), Turkish footballer and coach Masatoshi Gündüz Ikeda (1926–2003), Turkish mathematician of Japanese ancestry Gündüz Alp, brother or grandfather of Osman I
Surname Aka Gündüz (1886–1958), Turkish poet, composer and politician Asım Gündüz (1880–1970), Turkish military officer Asım Can Gündüz (1955–2016), Turkish rock and blues guitarist Atakan Gündüz (born 2001), Turkish football player Ömer Gündüz (born 2001), Dutch football player Samet Gunduz (born 1987), Swiss football player Seyhan Gündüz (born 1980), Turkish football player Şinasi Gündüz (born 1960), Turkish historian of religion Teoman Gündüz (born 2004), Turkish footballer