Cuneopsis heudei (P.M. Heude, 1874) Poyang Lake, Jiangxi, China103 mm
Lampsilis higginsii I. Lea, 1857 Iowa, Muscatine
Nephronaias hjalmarsoni (R.W. Dunker, 1858) Honduras
Lasmigona holstonia I. Lea, 1838 Alabama, Coosa River
Elliptio hopetonensis I. Lea, 1838 USA, Georgia110 mm
Coelatura horei (E.A. Smith, 1880) Lake Tanganyika
Coelatura horei josseti J.R. Bourguignat, 1886 Lake Tanganyika
Coelatura horei jouberti J.R. Bourguignat, 1886 Lake Tanganyika
Coelatura horei lavigeriana J.R. Bourguignat, 1886 Lake Tanganyika
Coelatura horei menardi J.R. Bourguignat, 1886 Lake Tanganyika
Parreysia houngdarauica (C.M. Tapparone-Canefri,1889) Myanmar
Amphinaias houstonensis (I. Lea, 1859) USA, Texas40,3 mm
Radiatula humilis (I. Lea, 1856) Cambogia, Mekong river
Sinanodonta hunganhi Thach, 2016
Unio hunteri (FOSSIL) Hislop, 1859 †
Lampsilis hydiana I. Lea, 1838 Arkansas65,5 mm
Coelatura hypsiprymna (E.C. Von Martens, 1897) Mozambique, Lake Malawi32,4 mm
Elliptio icterina T.A. Conrad, 1834 Alabama60 mm
Coactunio iguallalensis (FOSSIL) (D. Mongin, 1963 †) Niger110 mm
Utterbackiana imbecillis (T. Say, 1829) Alabama86,8 mm
Pachynaias imbricata (O.A.L. Mörch, 1861) Nicaragua
Unio imbricatus (FOSSIL) Hislop, 1859 †
Unionelloides impensis (FOSSIL) (Y.F. Huang & C. Chen,1980 †)
Anodonta implicata T. Say, 1829 Massachussetts
Anodonta impura T. Say, 1829 Mexico, Chihuahua
Contradens inaequalis (A. de Rochebrune, 1882) Thailand, Udon
Lamellidens indawgyiensis B. Prashad, 1930 Myanmar
Potamilus inflatus (I. Lea, 1831) Alabama
Amphinaias infucata (T.A. Conrad, 1834) Florida37 mm
Ensidens ingallsianus (I. Lea, 1852) Cambodia47 mm
Physunio inornatus (I. Lea, 1856) Laos, Pakse
Pseudodon inoscularis A.A. Gould, 1844 Western of Thailand92 mm
Pressidens insularis (H. Drouët, 1894) South China Sea, HaiNan
Theliderma intermedia (T.A. Conrad, 1836) Alabama
Radiatula involuta (W.H. Benson, 1856) India, Assam