• Acanthobothrium coronatum (Rudolphi, 1819) Blanchard, 1848
• Acmostomum dioicum Metschnikoff, 1865
• Acrorhynchides bivittatus (Uljanin, 1870) Strand, 1928 (uncertain > taxon inquirendum)
• Acrorhynchides graciosus (Uljanin, 1870) Strand, 1928 (uncertain > taxon inquirendum)
• Acrorhynchides reprobatus (Pereyaslawsewa, 1892) Strand, 1928 (uncertain > taxon inquirendum)
• Acrorhynchides spiralis (Pereyaslawzewa, 1892) Strand, 1928 (uncertain > taxon inquirendum)
• Acrorhynchus bivittatus (Uljanin, 1870) Graff, 1882 accepted as Macrorhynchus bivittatus (Uljanin, 1870) Pereyaslawzewa, 1892 accepted as Progyrator mamertinus (Graff, 1874) Reisinger, 1926
• Acrorhynchus dolichocephalus (Pereyaslawzewa, 1892) Graff, 1905 accepted as Paulodora dolichocephala (Pereyaslawzewa, 1892) Artois & Schockaert, 1998
• Acrorhynchus graciosus (Uljanin, 1870) Graff, 1882 accepted as Acrorhynchides graciosus (Uljanin, 1870) Strand, 1928
• Acrorhynchus reprobatus Graff, 1905 accepted as Progyrator mamertinus (Graff, 1874) Reisinger, 1926
• Acrorhynchus spiralis (Pereyaslawzewa, 1892) Graff, 1913 accepted as Acrorhynchides spiralis (Pereyaslawzewa, 1892) Strand, 1928
• Allostoma austriacum (Graff, 1882) accepted as Allostoma durum (Fuhrmann, 1898)
• Allostoma capitatum Uljanin, 1870 (uncertain > nomen dubium)
• Allostoma catinosa (Beklemischev, 1927) accepted as Allostoma catinosum (Beklemischev, 1927) Mack Fira, 1974
• Allostoma catinosum (Beklemischev, 1927) Mack Fira, 1974
• Allostoma durum (Fuhrmann, 1898)
• Allostoma pallidum Beneden, 1861
• Ancyrocephalus cobitis Ergens, 1963 accepted as Haliotrema cobitis (Ergens, 1963) Merella, Dmitrieva, Piras, Huyse, Gerasev & Garippa, 2010 accepted as Xenoligophoroides cobitis (Ergens, 1963) Dmitrieva, Sanna, Piras, Garippa & Merella, 2018
• Anisocladium fallax (Rudolphi, 1819) Looss, 1902
• Anisocladium gracile (Looss, 1901) Vlasenko, 1931
• Anisocoelium capitellatum (Rudolphi, 1819) Lühe, 1900
• Aphalloides coelomicola Dollfus, Chabaud & Golvan, 1957
• Aphallus tubarium (Rudolphi, 1819) Poche, 1926
• Aphanurus stossichii (Monticelli, 1891) Looss, 1907
• Aponurus galeatus (Looss, 1907)
• Archilina endostyla Ax, 1959
• Archilopsis unipunctata (Fabricius, 1826)
• Archimacrostomum peteraxi (Mack-Fira, 1971) Faubel & Warwick, 2005 accepted as Macrostomum peteraxi Mack-Fira, 1971
• Archimacrostomum rubrocinctum (Ax, 1951) Faubel & Warwick, 2005 accepted as Macrostomum rubrocinctum Ax, 1951
• Archimonotresis limophila Meixner, 1938
• Armatoplana taurica (Jacubowa, 1909)
• Ascocotyle longa Ransom, 1920
• Ascocotyle sinoecum (Ciurea, 1933) Sogandares-Bernal & Lumsden, 1963
• Axine belones Abildgaard, 1794
• Baltoplana valkanovi Ax, 1959
• Beauchampiola oculifera (Beauchamp, 1927) Luther, 1957
• Bothitrema bothi (MacCallum, 1913) Price, 1936
• Bothriocephalus gregarius Renaud Gabrion & Pasteur, 1983 (unaccepted > nomen nudum)
• Bothriocephalus scorpii (Müller, 1776) Cooper, 1917
• Bresslauilla relicta Reisinger, 1929
• Brinkmanniella palmata Karling, 1986
• Brunetia camarguensis (Brunet, 1965) Karling, 1980
• Bucephalus marinus Vlasenko, 1931
• Bunocotyle cingulata Odhner, 1928
• Cairaeanthus healyae Kornyushin & Polyakoya, 2012
• Cairaeanthus ruhnkei Kornyushin & Polyakoya, 2012
• Calceostomella inermis (Parona & Perugia, 1889) Palombi, 1943
• Calicotyle kroyeri Diesing, 1850
• Capsala pelamydis (Taschenberg, 1878) Johnston, 1929
• Carcharodorhynchus subterraneus Meixner, 1938
• Ceratopera falcata (Ax, 1953) Van Steenkiste & Leander, 2018
• Ceratopera falcata falcata (Ax, 1953) Van Steenkiste & Leander, 2018
• Ceratopera paradoxa (Pereyaslawzewa, 1892) Den Hartog, 1964
• Cercyra hastata Schmidt, 1861
• Cheliplana euxeinos Ax, 1959
• Cicerina eucentrota Ax, 1959
• Coelogynopora biarmata Steinböck, 1924
• Condylocotyla pilodora Pearson & Prévot, 1985
• Cryptocelis compacta Lang, 1884
• Cryptocelis glandulata Jacubowa, 1909
• Cryptocotyle concava (Creplin, 1825) Lühe, 1899
• Cylindrostoma monotrochum (Graff, 1882) Westblad, 1955
• Debeauchampiola oculifer accepted as Beauchampiola oculifera (Beauchamp, 1927) Luther, 1957
• Diascorhynchus caligatus Ax, 1959
• Diclybothrium armatum Leuckart, 1835
• Dicrogaster contracta Looss, 1902
• Diplectanum aculeatum Parona & Perugia, 1889
• Diplectanum aequans (Wagener, 1857) Diesing, 1858
• Diplectanum sciaenae Van Beneden & Hesse, 1863
• Diplectanum simile Bychowsky, 1957
• Diplostomum pseudospathaceum Niewiadomska, 1984
• Diplostomum rutili Razmashkin, 1969
• Diplostomum spathaceum (Rudolphi, 1819) Olsson, 1876
• Djeziraia euxinica (Mack-Fira, 1971) Schockaert, 1982
• Dollfusiella aculeata Beveridge, Neifar & Euzet, 2004
• Duplominona instanbulensis Ax, 1959 accepted as Duplominona istanbulensis (Ax, 1959)
• Duplominona istanbulensis (Ax, 1959)
• Echeneibothrium variabile Van Beneden, 1850
• Echinobothrium typus Van Beneden, 1849
• Enterostomula catinosa Beklemischev, 1927 accepted as Allostoma catinosum (Beklemischev, 1927) Mack Fira, 1974
• Enterostomula graffi (de Beauchamp, 1913)
• Erpocotyle (incertae sedis) pontica Pogorel'tseva, 1964
• Euxinia corniculata Graff, 1911
• Gaevskajatrema perezi (Mathias, 1926) Gibson & Bray, 1982
• Gaevskajatrema ponticum (Koval, 1966) Machkevsky, 1990 accepted as Gaevskajatrema perezi (Mathias, 1926) Gibson & Bray, 1982
• Galactosomum lacteum (Jägerskiöld, 1896) Looss, 1899
• Galactosomum phalacrocoracis Yamaguti, 1939
• Grillotia (Grillotia) erinaceus (van Beneden, 1858) Guiart, 1927
• Gyratrix hermaphroditus Ehrenberg, 1831
• Gyrodactylus alviga Dmitrieva & Gerasev, 2000 accepted as Gyrodactylus pterygialis Bychowsky & Polyansky, 1953
• Gyrodactylus arcuatus Bychowsky, 1933
• Gyrodactylus atherinae Bychowsky, 1933
• Gyrodactylus bubyri Osmanov, 1965
• Gyrodactylus crenilabri Zaika, 1966
• Gyrodactylus flesi Malmberg, 1957
• Gyrodactylus gerasevi Dmitrieva, Sanna, Vodiasova, Prokhorova, Casu, Burreddu, Piras, Garippa & Merella, 2022
• Gyrodactylus ginestrae Kvach, Ondračková, Seifertová & Hulak, 2019
• Gyrodactylus harengi Malmberg, 1957
• Gyrodactylus leopardinus Dmitrieva & Skidan, 2005
• Gyrodactylus mugili Zhukov, 1970