Bania pauluccii (FOSSIL) (Š. Brusina, 1907 †)
Stankovicia pavlovici (W. Polinski, 1929)
Tadzhikamnicola pavlovskii (Z.I. Izzatullaev, 1973)
Caspiohydrobia pavlovskii Y.I. Starobogatov& Z.I. Izzatullaev, 1974
Pyrgulopsis pecosensis D.W. Taylor, 1987
Pyrgulopsis peculiaris R. Hershler, 1998
Pseudavenionia pedemontana M. Bodon & F.L. Giusti,1982
Belgrandiella pelerei M. Haase, 1994
Pyrgulopsis pellita R. Hershler, 1998
Alzoniella pellitica B. Arconada, E. Rolán& H.D. Boeters, 2007
Bythiospeum pellucidum (Seckendorf, 1846)
Pseudamnicola penchinati (J.R. Bourguignat, 1870)
Fluviopupa pentecostata S. Zielske & M. Haase,2014
Cincinnatia peracuta (H.A. Pilsbry & B. Walker,1889)
Hydrobia peregrina (FOSSIL) Boettger, 1901 †
Sulawesidrobia perempuan S. Zielske, M. Glaubrecht& M. Haase, 2011
Pyrgulopsis perforata R. Hershler, H.P. Liu& C. Bradford, 2013
Saccoia perforata (FOSSIL) (D. Pantanelli, 1886 †)
Alzoniella perrisii (D. Dupuy, 1851)
Heterocyclus perroquini Unknown
Prososthenia pertica (FOSSIL) Andreescu & Pana, 1985 †
Pyrgulopsis perturbata R. Hershler, 1989
Prososthenia pesae (FOSSIL) D. Esu & O. Girotti,2016 †
Arganiella pescei F.L. Giusti & E. Pezzoli,1984
Lanzaia pesici P. Glöer, J. Grego, Z. Eröss& Z. Fehér, 2015
Heterocyclus petiti Unknown
Pseudodianella petkovici (FOSSIL) (P.S. Pavlovic, 1903 †)
Cincinnatia petrifons F.G. Thompson, 1968
Bythiospeum petroedei P. Glöer & J. Grego, 2015
Belgrandiella petrovi D.G. Georgiev, 2014
Fluvidona petterdi (E.A. Smith, 1882)
Beddomeia petterdi W.F. Ponder & K.B. Clark,1993
Austropyrgus petterdianus (J.W. Brazier, 1875)
Iglica pezzolii H.D. Boeters, 1971
Falsipyrgula pfeiferi (E. Weber, 1927)