Clare Boothe Luce (née Ann Clare Boothe; March 10, 1903 – October 9, 1987) was an American writer, politician, U.S. ambassador, and public conservative figure. A versatile author, she is best known for her 1936 hit play The Women, which had an all-female cast. Her writings extended from drama and screen scenarios to fiction, journalism, and war reportage. She was married to Henry Luce, publisher of Time, Life, Fortune, and Sports Illustrated.

Politically, Luce was a leading conservative in later life and was well known for her anti-communism, and was an avowed fascist, and racist against "brown and yellow enemies." In her youth, she briefly aligned herself with the liberalism of President Franklin Roosevelt as a protégé of Bernard Baruch but later became an outspoken critic of Roosevelt. Although she was a strong supporter of the Anglo-American alliance in World War II, she remained outspokenly critical of British colonialism in India.

Known as a charismatic and forceful public speaker, especially after her conversion to Roman Catholicism in 1946, she campaigned for every Republican presidential candidate from Wendell Willkie to Ronald Reagan.