Cardiff is a surname. Notable people with the surname include:
Craig Cardiff (born 1976), Canadian musician Elston Cardiff (1889–1969), Canadian politician Gladys Cardiff, American poet Jack Cardiff (1914–2009), British cinematographer Janet Cardiff (born 1957), Canadian artist Jim Cardiff (1944–1987), Canadian ice hockey player Murray Cardiff (1934–2013), Canadian politician Steve Cardiff (1957–2011), Canadian politician