Omar Khayyam (1048–1131) was a Persian poet, mathematician, philosopher and astronomer.
Omar Khayyam may also refer to:
Film Omar Khayyam (1923 film), an American silent film Omar Khaiyyam, a 1946 Bollywood film Omar Khayyam (1957 film), an American historical adventure film The Omar Khayyam Show, Spike Milligan's 1963 remake of his series The Idiot Weekly
Places Omar Khayyam (crater), a lunar crater Omar Khayyam Square, a city square in Nishapur, Iran
Other uses Rubaiyat of Omar Khayyam, a poem by Edward FitzGerald Omar Khayyam (horse) (1914–1938), a British-born Thoroughbred racehorse Omar Khayam (protester) (born 1983), British protester who dressed as a suicide bomber Omar Khayyám, a 1906 choral work by Sir Granville Bantock Omar Khyam, British Islamist militant, caught during Operation Crevice in 2004
See also Omar Kiam, nickname of American fashion designer Alexander Kiam (1894-1954) Kerry Wendell Thornley (1938–1998), co-founder of Discordianism, who wrote as Omar Khayyam Ravenhurst