Giffen is a surname. Notable people with the surname include:
Brad Giffen, Canadian television reporter, anchor and radio personalityGeorge Giffen (1859–1927), Australian cricketerJames Giffen, American businessmanKeith Giffen (born 1952), American comic book illustrator and writerRobert C. Giffen (1886-1962), United States Navy admiralRobert Giffen (1837–1910), British statistician and economistWalter Giffen (1861–1949), Australian cricketer