The aim of this paper is to increase the knowledge on the diversity of digenean parasites in ophidians and anurans from northeastern Argentina. Specimens of the snakes <i>Eunectes notaeus</i>, <i>Hydrodynastes gigas</i>, <i>Micrurus corallinus</i>, <i>Philodryas</i> sp. and <i>Sibynomorphus</i> sp., and the anurans <i>Rhinella schneideri</i>, <i>Phyllomedusa azurea</i> and <i>Leptodactylus latrans</i> were examined. Twelve digenean species were identified: <i>Catadiscus corderoi</i> Mañé-Garzón, 1958, <i>Catadiscus dolichocotyle</i> (Cohn, 1903), <i>Catadiscus uruguayensis</i> Freitas & Lent, 1939, <i>Choledocystus elegans</i> (Travassos, 1926), <i>Gorgoderina parvicava</i> Travassos, 1922, <i>Haplometroides buccicola</i> Odhner, 1911, <i>Heterodiplostomum lanceolatum</i> Dubois, 1936, <i>Infidum similis</i> Travassos, 1916, <i>Mesocoelium monas</i> (Rudolphi, 1819), <i>Plagiorchis luehei</i> (Travassos, 1927), <i>Telorchis clava</i> (Diesing, 1850) and <i>Travtrema stenocotyle</i> (Cohn, 1902). New host species and/or new locality records from Argentina are presented.Facultad de Ciencias Naturales y Museo