Dargan is a surname. Notable people with the surname include:
Ash Dargan, indigenous Australian didgeridoo player Edmund Strother Dargan, U.S. and Confederate representative from Alabama George W. Dargan, U.S. representative from South Carolina Karl Dargan, American amateur boxer Michael Dargan (1929–2023), Irish cricketer Olive Tilford Dargan, American author Troy Dargan (1997–2023), Australian rugby player William Dargan, Irish engineer