Duff is a given name, almost always masculine, which may refer to: Men Dub, King of Scotland (died 967), sometimes anglicised as Duff MacMalcolm Duff Bruce, Scottish footballer in the 1920s Duff Cooley (1873–1937), American baseball player Duff Cooper (1890–1954), British politician, diplomat and author Duff Gibson (born 1966), Canadian retired skeleton racer and Olympic and world champion Duff Green (1791–1875), American teacher, military leader, politician, journalist, author, diplomat, industrialist and businessman Duff Hart-Davis (born 1936), British biographer, naturalist and journalist Duff Wilson, American investigative reporter Women Duff Twysden (1893–1938), British socialite best known as the inspiration for Brett Ashley in Hemingway's novel The Sun Also Rises See also Duff (nickname) Masculine given names