Haldun is a masculine given name of Turkish origin. Notable people with the name include:
Given name Haldun Alagaş (born 1970), Turkish world and European champion karateka Haldun Boysan (1958–2020), Turkish actor Haldun Dormen (1928–2026), Turkish actor Haldun Efemgil (born 1966), Turkish judoka Haldun Ozaktas, Turkish electrical engineer Haldun Taner (1915–1986), Turkish playwright
See also Khaldoon, Arabic spelling of the name