1. Genus Alexandrobdella Bolotov, Klass, Konopleva, Bespalaya, Gofarov, Kondakov & Vikhrev, 2020
2. Genus Ambulobdella A. Utevsky & S. Utevsky, 2018
3. Genus Antarcticobdella
4. Genus Austroplatybdellina A. Utevsky, S. Utevsky, Cichocka, Bielecki & Trontelj, 2023
5. Genus Bdellamaris Richardson, 1953
6. Genus Branchellion Savigny, 1822
7. Genus Brumptiana Llewellyn & Knight-Jones, 1984
8. Genus Calliobdella van Beneden & Hesse, 1863
9. Genus Ceratobdella Utevsky & Gordeev, 2015
10. Genus Cottobdella
11. Genus Cryobdellina
12. Genus Cyrillobdella
13. Genus Cystobranchus Diesing, 1859
14. Genus Dolichobdella Utevsky & Chernyshev, 2012
15. Genus Dollfusobdella Burreson & Williams, 2008
16. Genus Galatheabdella Richardson & Meyer, 1973
17. Genus Ganymedebdella Leigh-Sharpe, 1915
18. Genus Janusion Leigh-Sharpe, 1933
19. Genus Johanssonia Selensky, 1914
20. Genus Leporinabdella Burreson & Williams, 2008
21. Genus Megaliobdella
22. Genus Orientobdella
23. Genus Phyllobdellina
24. Genus Phyllobranchus
25. Subfamily Piscicolinae Johnston, 1865
    1. Genus Acipenserobdella Epstein, 1969
    2. Genus Baicalobdella Dogiel & Bogolepova, 1957
    3. Genus Caspiobdella Epshtein, 1966
    4. Genus Limnotrachelobdella Epshtein, 1968
    5. Genus Nototheniobdella A. Utevsky, 1993
    6. Genus Piscicola Blainville, 1818
    7. Genus Trachelobdella Diesing, 1850
26. Subfamily Platybdellinae Epshtein, 1970
    1. Genus Austrobdella Badham, 1916
    2. Genus Bathybdella Burreson, 1981
    3. Genus Beringobdella Caballero, 1974
    4. Genus Crangonobdella Selensky, 1914
    5. Genus Cryobdella Harding, 1922
    6. Genus Glyptonotobdella Sawyer & White, 1969
    7. Genus Hemibdella van Beneden & Hesse, 1863. Revised
    8. Genus Heptacyclus Vasileyev, 1939
    9. Genus Lizabdella A. Utevsky, 2007
    10. Genus Makarabdella Richardson, 1959
    11. Genus Marsipobdella Moore, 1952
    12. Genus Mysidobdella Selensky, 1927
    13. Genus Myzobdella Leidy, 1851
    14. Genus Notobdella Benham, 1909
    15. Genus Notostomum Levinsen, 1882
    16. Genus Oceanobdella Caballero, 1956
    17. Genus Ostreobdella Oka, 1927
    18. Genus Phyllobdella Moore, 1939
    19. Genus Piscicolaria Whitman, 1889
    20. Genus Platybdella Malm, 1863
    21. Genus Pterobdella Kaburaki, 1921
    22. Genus Trulliobdella Brinkman, 1947
    23. Genus Abranchus Johansson, 1896 accepted as Oceanobdella Caballero, 1956 (in part (pre-occupied))
    24. Genus Aestabdella Burreson, 1976 accepted as Pterobdella Kaburaki, 1921 (unaccepted > junior subjective synonym)
    25. Genus Arctobdella de Silva & Kabata, 1961 accepted as Hemibdella van Beneden & Hesse, 1863. Revised (synonym)
    26. Genus Carcinobdella Oka, 1910 accepted as Notostomum Levinsen, 1882 (synonym)
    27. Genus Illinobdella Meyer, 1940 accepted as Myzobdella Leidy, 1851 (synonym)
    28. Genus Levinsenia Vasiliev, 1939 accepted as Beringobdella Caballero, 1974 (preoccupied; junior homonym of Levinsenia Mesnil, 1897 (Polychaeta))
    29. Genus Malmiana Strand, 1942 accepted as Heptacyclus Vasileyev, 1939 (synonym)
    30. Genus Notostomobdella Moore & Meyer, 1951 accepted as Notostomum Levinsen, 1882 (synonym)
    31. Genus Ottonia Malm, 1874 accepted as Malmiana Strand, 1942 accepted as Heptacyclus Vasileyev, 1939 (preoccupied)
    32. Genus Platybdella Harding, 1922 accepted as Cryobdella Harding, 1922 (synonym)
    33. Genus Sanguinothus de Silva & Burdon-Jones, 1961 accepted as Crangonobdella Selensky, 1914 (synonym)
    34. Genus Ichthyobdella Blainville, 1827 (uncertain > taxon inquirendum, probably a synonym, but awaiting more information)
27. Genus Pleurobdella
28. Genus Pontobdellina Harding, 1927
29. Subfamily Pontobdellinae Llewellyn, 1966
    1. Genus Mooreobdellina Epshtein, 1972
    2. Genus Oxytonostoma Malm, 1863
    3. Genus Pontobdella Leach, 1815
    4. Genus Stibarobdella Leigh-Sharpe, 1925 accepted as Pontobdella Leach, 1815 (unaccepted > junior subjective synonym, subjective synonym)
30. Genus Pterobdellina Boisen Bennike & Bruun, 1939
31. Genus Richardsonobdella Burreson & Dybdahl, 1989
32. Genus Taimenobdella Epshtein, 1987
33. Genus Trachelobdellina
34. Genus Zeylanicobdella Silva, 1963
35. Genus Ottoniobdella Moore & Meyer, 1951 accepted as Malmiana Strand, 1942 accepted as Heptacyclus Vasileyev, 1939 (synonym)
36. Genus Pseudobranchellion Apáthy, 1890 accepted as Ozobranchus Quatrefages, 1852 (unaccepted > junior subjective synonym)
37. Genus Rhopalobdella Burreson & Kearn, 2000 accepted as Pterobdella Kaburaki, 1921 (synonym)

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