Fluvidona pontvillensis J.E. Tenison-Woods, 1876
Cincinnatia porterae (F.G. Thompson, 2000)
Austropyrgus praecipitis A. Clark, W.B. Miller& W.F. Ponder, 2003
Hydrobia praecursor (FOSSIL) Sandberger †
Saccoia praeescoffierae (FOSSIL) (J. Almera, 1894 †)
Bania praeglobulina (FOSSIL) (Kókay, 2006 †)
Prososthenia praeslavonica (FOSSIL) O. Mandic, Kurecic, T.A. Neubauer& M. Harzhauser †
Pyrgula prahovensis (FOSSIL) Papaianopol & Macale?,2004 †
Pseudamnicola prasina O.W. Von Rosen, 1903
Caspia pregmelini (FOSSIL) (Gillet & Geissert,1971 †)
Prespopyrgula prespaensis (J. Urbanski, 1939)
Chilopyrgula prespensis (J. Urbanski)
Bythiospeum priei Callot-Girardi, 2017
Fluviopupa priei M. Haase, Fontaine& O. Gargominy, 2010
Probaicalia prinadae (FOSSIL) Martinson, 1949 †
Pyrgula prisca (FOSSIL) (M. von Neumayr in Herbich& M. von Neumayr, 1875 †)
Mesobia pristina F.G. Thompson & R. Hershler,1991
Austropyrgus privus A. Clark, W.B. Miller& W.F. Ponder, 2003
Hydrobia procera (FOSSIL) (C. Mayer, 1864 †)
Plagigeyeria procerula (A.M. Angelov, 1965)
Austropyrgus procerus A. Clark, W.B. Miller& W.F. Ponder, 2003
Caspia producta (FOSSIL) E. Jekelius, 1944 †
Brasovia producta (FOSSIL) (E. Jekelius, 1944 †)
Micromelania proni (FOSSIL) Miloševic, 1971 †
Torosia proschwitzi P. Glöer & D.G. Georgiev,2012
Probythinella protera H.A. Pilsbry, 1953
Bania prototypica (FOSSIL) (Š. Brusina, 1872 †)
Hydrobia protracta (FOSSIL) (K.E.I. von Eichwald,1853 †)
Beddomeia protuberata W.F. Ponder & K.B. Clark,1993
Belgrandiella provincialis (H.D. Boeters, 2000)
Pseudamnicola proxima (FOSSIL) (A. Fuchs, 1870 †)
Pseudamnicola proximoides (FOSSIL) (G. Capellini, 1880 †)
Staja pseudoatropida (FOSSIL) E. Jekelius, 1944 †
Turricaspia pseudoazovica (FOSSIL) V.V. Anistratenko& Gozhik, 1995 †
Pyrgula pseudobacuana B.M. Logvinenko& Y.I. Starobogatov, 1968