Bania pauluccii (FOSSIL) (Š. Brusina, 1907 †)
Stankovicia pavlovici (W. Polinski, 1929) Albania, Prespa Lake
Tadzhikamnicola pavlovskii (Z.I. Izzatullaev, 1973)
Caspiohydrobia pavlovskii Y.I. Starobogatov& Z.I. Izzatullaev, 1974 Aral Lake
Pyrgulopsis pecosensis D.W. Taylor, 1987 New Mexico, Eddy County
Pyrgulopsis peculiaris R. Hershler, 1998 Nevada, White Pine County
Pseudavenionia pedemontana M. Bodon & F.L. Giusti,1982 Italy, Liguria
Belgrandiella pelerei M. Haase, 1994 Austria
Pyrgulopsis pellita R. Hershler, 1998 Nevada, Eureka County
Alzoniella pellitica B. Arconada, E. Rolán& H.D. Boeters, 2007 Spain
Bythiospeum pellucidum (Seckendorf, 1846) Germany
Pseudamnicola penchinati (J.R. Bourguignat, 1870) Europe
Fluviopupa pentecostata S. Zielske & M. Haase,2014 Vanuatu Island, New Hebrides
Cincinnatia peracuta (H.A. Pilsbry& B. Walker, 1889) Mexico
Hydrobia peregrina (FOSSIL) Boettger, 1901 †
Sulawesidrobia perempuan S. Zielske, M. Glaubrecht& M. Haase, 2011 Indonesia, Sulawesi
Pyrgulopsis perforata R. Hershler, H.P. Liu& C. Bradford, 2013 Nevada
Saccoia perforata (FOSSIL) (D. Pantanelli, 1886 †)
Alzoniella perrisii (D. Dupuy, 1851) Europe
Heterocyclus perroquini Unknown New Caledonia
Prososthenia pertica (FOSSIL) Andreescu & Pana, 1985 †
Pyrgulopsis perturbata R. Hershler, 1989 California, Mono County
Prososthenia pesae (FOSSIL) D. Esu & O. Girotti,2016 † Italy, Tuscany
Arganiella pescei F.L. Giusti & E. Pezzoli,1984 Italy, Appennino centrale
Lanzaia pesici P. Glöer, J. Grego, Z. Eröss& Z. Fehér, 2015 Montenegro
Heterocyclus petiti Unknown New Caledonia
Pseudodianella petkovici (FOSSIL) (P.S. Pavlovic, 1903 †)
Cincinnatia petrifons F.G. Thompson, 1968 Florida
Bythiospeum petroedei P. Glöer & J. Grego, 2015 Bosnia and Herzegovina
Belgrandiella petrovi D.G. Georgiev, 2014 Bulgaria
Fluvidona petterdi (E.A. Smith, 1882) Australia, Lismore
Beddomeia petterdi W.F. Ponder & K.B. Clark,1993 Tasmania
Austropyrgus petterdianus (J.W. Brazier, 1875) Tasmania, Dorset
Iglica pezzolii H.D. Boeters, 1971 Piemonte, Monte Fenera
Falsipyrgula pfeiferi (E. Weber, 1927) Turkey, Isparta