Subfamili

Tiga belas subfamili berada dalam keluarga ini, tetapi jumlahnya tidak konsisten:^[1]

• Allogomtiotrematinae - Gupta, 1955; Yamaguti, 1958
• Aphallinae - Yamaguti, 1958
• Delphinicolinae - Yamaguti, 1933
• Diasiellinae - Yamaguti, 1958
• Metorchiinae - Luhe, 1909
• Oesophagicolinae - Yamaguti, 1933
• Opisthorchiinae - Yamaguti, 1899
• Pachytrematinae - Railliet, 1919; Ejsmont, 1931
• Plotnikoviinae - Skrjabin, 1945; Skrjabin et Petrov, 1950
• Pseudamphimerinae - Skrjabin et Petrov, 1950
• Pseudamphistominae - Yamaguti, 1958
• Ratziinae - Dollfus, 1929; Price, 1940
• Tubangorchiinae - Yamaguti, 1958

Genus^[1]

• Agrawalotrema Sahay & Sahay, 1988
• Allogomtiotrema Yamaguti, 1958
• Amphimerus Barker, 1911
• Cladocystis Poche, 1926
• Clonorchis Looss, 1907
• Cyclorchis Luhe, 1908
• Delphinicola Yamaguti, 1933
• Diasiella Travassos, 1949
• Erschoviorchis Skrjabin, 1945
• Euamphimerus Yamaguti, 1941
• Evranorchis Skrjabin, 1944
• Gomtia Thapar, 1930
• Hepatiarius Fedzullaev, 1961
• Holometra Looss, 1899
• Metametorchis Morozov, 1939
• Metorchis Looss, 1899
• Microtrema Kobayashi, 1915
• Nigerina Baugh, 1958
• Oesophagicola Yamaguti, 1933
• Opisthorchis Blanchard, 1895
• Pachytrema Looss, 1907
• Parametorchis Skrjabin, 1913
• Paropisthorchis Stephens, 1912
• Plotnikovia Skrjabin, 1945
• Pseudamphimerus Gower, 1940
• Pseudamphistomum Luhe, 1908
• Pseudogomtiotrema Gupta & Jain, 1991
• Ratzia Poche, 1926
• Satyapalia Lakshminarayana & Hafeezullah, 1974
• Thaparotrema Gupta, 1955
• Trionychotrema Chin & Zhang, 1981
• Tubangorchis Skrjabin, 1944
• Witenbergia Vaz, 1932