Étienne Antoine Guillaume Richaud (in French pronounced as /etjɛn ɑ̃twan ɡijom ʁiʃo/), born on January 11, 1841, in Martigues (Bouches-du-Rhône, France) and died on May 31, 1889, in the Bay of Bengal, was the Principal private secretary of the Minister of Commerce Maurice Rouvier (Gambetta's Ministry), Governor of La Réunion, Governor General for Inde française in the Second French Colonial Empire under Third Republic.