Sphaerium incomitatum (J.G.J. Kuiper, 1966)
Sphaerium indicum (G.P. Deshayes, 1854)
Pisidium insigne W.M. Gabb, 1868
Eupera insignis H.A. Pilsbry, 1925
Pisidium invenustum (J.G.J. Kuiper, 1996)
Pisidium iquito C.F. Ituarte, 2004
Pisidium issykkulense (Z.I. Izzatullaev& Y.I. Starobogatov, 1986)
Musculium iyoense Y. Hirase
Pisidium jamaicense T. Prime, 1865
Pisidium japonicum H.A. Pilsbry & Y. Hirase,1908
Sphaerium japonicum C.A. Westerlund, 1883
Pisidium johnsoni E.A. Smith, 1882
Pisidium juliae (A. Stadnichenko, 1980)
Sphaerium kashmirensis B. Prashad, 1937
Pisidium kawamurai A. Mori, 1938
Sphaerium kendricki J.G.J. Kuiper, 1983
Pisidium kenianum H.B. Preston, 1911
Pisidium khorense (Z.I. Izzatullaev& Y.I. Starobogatov, 1986)
Pisidium khurbaense (F. Zatrawkin, 1987)
Eupera klappenbachi M.C.D. Mansur& I.L. Veitenheimer-Mendes, 1975
Pisidium korotnevi (W.A. Lindholm, 1909)
Sphaerium korotniewii (W. Dybowski, 1902)
Pisidium kosciusko (T. Iredale, 1943)
Pisidium kuiperi S.P. Dance, 1967
Henslowiana kunasiriensis (A. Mori, 1938)
Sphaerium lacusedes T. Iredale, 1943
Musculium lacustre (O.F. Müller, 1774)
Pisidium langleyanum J.C. Melvill& J.H. Ponsonby, 1891
Sphaerium lauricochae R.A. Philippi, 1869
Pisidium lebruni J.F. Mabille, 1884
Pisidium lilljeborgi S. Clessin, 1886
Paramusculium limanicum (I.M. Moskvicheva in F. Zatrawkin& I.M. Moskvicheva, 1986)
Pisidium ljovushkini (Y.I. Starobogatov, 1962)
Pisidium llanquihuense C.F. Ituarte, 1999
Pisidium maaseni J.G.J. Kuiper, 1987