Rafael Mario Ramón Llerena (March 5, 1913 – December 10, 2006) was a Cuban intellectual who worked alongside Fidel Castro to topple Fulgencio Batista but, opposing communism, broke with Castro after he gained power.
Intending to become a Christian minister, he attended Princeton Theological Seminary, but then switched careers.
In 1957, he was named chairman of the New York branch of the July 26 Movement, and played a pivotal role in circumventing Batista's attempts at censorship during the uprising.
Citing ideological differences, he resigned from the movement before Castro's triumph on January 1, 1959.
He became a strong voice among other exiles, publishing numerous essays and a book in 1978 called The Unsuspected Revolution: The Birth and Rise of Castroism, in which he claims many of Castro's followers were deceived by his drift to Communism.