1. Subfamily Bathymodiolinae Kenk & B. R. Wilson, 1985
   1. Genus Adipicola Dautzenberg, 1927
   2. Genus Bathymodiolus Kenk & B. R. Wilson, 1985
   3. Genus Benthomodiolus Dell, 1987
   4. Genus Gigantidas Cosel & B. A. Marshall, 2003
   5. Genus Idas Jeffreys, 1876
   6. Genus Nypamodiolus Y.-T. Lin, Kiel, T. Xu & J.-W. Qiu, 2022
   7. Genus Tamu Gustafson, R. D. Turner, Lutz & Vrijenhoek, 1998
   8. Genus Terua Dall, Bartsch & Rehder, 1938
   9. Genus Vadumodiolus Altamia, Appiah-Madson, Falco-Poulin, Huettel, Rubin-Blum, Dubilier, Gruber-Vodicka, Leisch & Distel, 2024
   10. Genus Vulcanidas Cosel & B. A. Marshall, 2010
   11. Genus Habepegris F. R. Bernard, 1978 accepted as Idas Jeffreys, 1876 (junior subjective synonym)
   12. Genus Idasola Iredale, 1915 accepted as Idas Jeffreys, 1876 (Unnecessary replacement name for Idas Jeffreys, 1876)
   13. Genus Miridas Iredale, 1939 accepted as Idas Jeffreys, 1876 (unaccepted > junior subjective synonym)
   14. Genus Myrina H. Adams & A. Adams, 1854 accepted as Adipicola Dautzenberg, 1927 (Invalid: junior homonym of Myrina Fabricius, 1807 [Lepidoptera]; Adipicola is a replacement name)
2. Subfamily Botulinae Scarlato & Starobogatov, 1979
   1. Genus Botula Mörch, 1853
   2. Genus Fungiacava Soot-Ryen, 1969
   3. Genus Leiosolenus P. P. Carpenter, 1857
   4. Genus Zelithophaga H. J. Finlay, 1926
   5. Genus Botulopa Iredale, 1939 accepted as Botula Mörch, 1853 (unaccepted > junior subjective synonym)
   6. Genus Dactylus Mörch, 1861 accepted as Leiosolenus (Labis) Dall, 1916 represented as Leiosolenus P. P. Carpenter, 1857
   7. Genus Exodiberus Iredale, 1939 accepted as Leiosolenus (Diberus) Dall, 1898 represented as Leiosolenus P. P. Carpenter, 1857
   8. Genus Myapalmula Iredale, 1939 accepted as Leiosolenus P. P. Carpenter, 1857
   9. Genus Myoforceps P. Fischer, 1886 accepted as Leiosolenus (Myoforceps) P. Fischer, 1886 represented as Leiosolenus P. P. Carpenter, 1857
   10. Genus Stumpiella Soot-Ryen, 1955 accepted as Leiosolenus (Stumpiella) Soot-Ryen, 1955 represented as Leiosolenus P. P. Carpenter, 1857
3. Subfamily Ciboticolinae B. Morton, J.H. Wei, Leung, S. Chan & Dinesen, 2024
   1. Genus Ciboticola Iredale, 1939
4. Subfamily Limnoperninae Scarlato & Starobogatov, 1979
   1. Genus Jolya Bourguignat, 1877
   2. Genus Limnoperna Rochebrune, 1882
   3. Genus Lioberus Dall, 1898
   4. Genus Sinomytilus Thiele, 1934
   5. Genus Fulgida Jousseaume, 1919 accepted as Lioberus Dall, 1898 (unaccepted > junior subjective synonym)
5. Subfamily Modiolinae G. Termier & H. Termier, 1950
   1. Genus Arenifodiens B. R. Wilson, 2006
   2. Genus Modiolatus Jousseaume, 1893
   3. Genus Modiolus Lamarck, 1799
   4. Genus Stavelia J. E. Gray, 1858
   5. Genus Callitriche Poli, 1791 accepted as Gibbomodiola Sacco, 1898
   6. Genus Modiola [sic] accepted as Modiolus Lamarck, 1799 (unaccepted > misspelling - incorrect subsequent spelling)
   7. Genus Nudiola Monterosato, 1917 accepted as Gibbomodiola Sacco, 1898 (synonym)
   8. Genus Tamarindiformis Kuroda, 1931 accepted as Modiolus Lamarck, 1799 (unaccepted > unavailable name)
   9. Genus Volsella Scopoli, 1777 accepted as Modiolus Lamarck, 1799 (invalid: suppressed by ICZN Opinion325)
   10. Genus Gibbomodiola Sacco, 1898 (uncertain > taxon inquirendum)
6. Subfamily Xenostrobinae K. S. Tan, S. H. M. Tan, K. Sanpanich, T. Duangdee & R. Ambarwati, 2022
   1. Genus Vignadula Kuroda & Habe, 1971
   2. Genus Xenostrobus B. R. Wilson, 1967
7. Subfamily Modiolidae incertae sedis (temporary name)
   1. Genus Modiolula Sacco, 1898
   2. Genus Notobotula C. A. Fleming, 1959 accepted as Modiolula Sacco, 1898

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