Léon Laleau (3 August 1892 –7 September 1979[1]) was a Haitian writer, politician, and diplomat.
He was recipient of numerous honors, including The Legion of Honor rank of Grand Officer (France), Saint Grégoire (Vatican), and Palms Académique, Arts et Lettres rank of Commandeur (France).
Born in Port-au-Prince, Laleau held two degrees, one in law and another in letters and sciences.
He served in numerous diplomatic positions, such as Chief of Diplomatic Missions in Rome, London, Paris, Santiago, and Lima and Special Mission Ambassador to Panama, Cuba, the United Nations, and UNESCO.
He was a signer of the 24 July 1934 accord which ended the United States' occupation of Haiti.