Etienne-Marie-Alphonse Sonnois, born December 10, 1828 in Lamargelle (Saint-Seine-l'Abbaye) in the Côte-d'Or in eastern France, died 7 February 1913 (aged 84) in Cambrai within the Hauts-de-France region on the Scheldt river, was a French Catholic bishop, bishop of Saint-Dié from 1889 to 1893 then archbishop of Cambrai de 1893 to 1913.