Abstract A total of 890 specimens of the Atlantic cod Gadus morhua L. (Osteichthyes, Gadidae) have been examined for infestations with digenetic trematodes. The cods were caught at 15 sampling stations in Danish and adjacent waters with salinities ranging from 8‰ (the Baltic off Bornholm) to 35‰ (the North Sea and the Atlantic Ocean off the Faroes), and from shallow water down to a depth of 230 m. 18 species (metacercariae and adults) were found. The following species were found in the alimentary tract: Prosorhynchus squamatus Odhner, 1905 (Bucephalidae), Podocotyle atomon (Rudolphi, 1802), P. reflexa (Creplin, 1825) (Opecoelidae), Lepidapedon elongatum (Lebour, 1908), L. rachion (Cobbold, 1858), Opechona bacillaris (Molin, 1859) (Lepocreadiidae), Stephanostomum pristis (Deslongchamps, 1824) (Acanthocolpidae), Derogenes varicus (Muller & 1784), Lecithaster gibbosus (Rudolphi, 1802), Brachyphallus crenatus (Rudolphi, 1802), Hemiurus communis Odhner, 1905, H. luehei Odhner, 1905, H. levinseni Odhner, 1905, ...