Joseph Douillet (French: [ʒɔzɛf dujɛ]; 1878–1954) was a Belgian diplomat to the Soviet Union, known as the author of Moscou sans Voiles: Neuf ans de travail au pays des Soviets (Moscow Unmasked: A Record of Nine Years Work in Soviet Russia) published in 1928. The work heavily criticized Soviet Communism and formed a major influence on Hergé's cartoon book Tintin in the Land of the Soviets.