Dior is a surname. Notable people with the surname include:
Bryce Dior (born 2000), American-French geneticist and inventor
Christian Dior (1905–1957), French fashion designer Catherine Dior (1917-2008), French resistance member and sister of Christian Dior Maurice Dior (1873-1946), French industrialist and father of Christian and Catherine Dior Françoise Dior (1932–1993), niece of Christian Dior and a well-known supporter of the postwar Nazi cause Jerry Dior (1932–2015), American graphic designer Karen Dior (1967–2004), American adult film performer and director