Radix pinteri H. Schütt, 1974
Radix plicata (FOSSIL) (F. Sacco, 1884 †)
Lymnaea plicata M.I. Hylton-Scott, 1953
Radix plicatula W.H. Benson, 1842
Radix podarensis (FOSSIL) Macale?, 2000 †
Provalenciennesia poljaki (FOSSIL) Gorjanovic-Kramberger,1923 †
Valenciennius praeannulatus (FOSSIL) Sukhova, 1955 †
Stagnicola praebouilleti (FOSSIL) W.R. Schlickum, 1970 †
Galba praepalustris (FOSSIL) (F. Roman, 1907 †)
Lymnaea producta J.W. Mighels, 1845
Stagnicola proxima I. Lea, 1856
Radix pseudoovata (FOSSIL) (A.V.M.D. D'Orbigny,1852 †)
Lymnaea psilia (J.R. Bourguignat, 1862)
Lymnaea pucilla F.W. Hutton, 1885
Radix quadrasi (O.F. von Möllendorff)
Stagnicola reflexa (T. Say, 1821)
Stagnicola reinholdkunzi (FOSSIL) M. Harzhauser & al.,2012 †
Radix relicta W. Polinski, 1929
Pseudisidora reticulata (J. Gassies, 1867)
Zagrabica reticulata (FOSSIL) Stefanescu, 1896 †
Valenciennius reussi (FOSSIL) (M. von Neumayr in M. von Neumayr& C.R.C. Paul, 1875 †)
Valenciennius revolutus (FOSSIL) (V.V. Bogachev, 1931 †)
Corymbina rhodensis (FOSSIL) Bukowski, 1892 †
Zagrabica rhytiphora (FOSSIL) Š. Brusina, 1897 †
Radix rippensis (FOSSIL) (J. Almera& Bofill y Poch, 1895 †)
Zagrabica rossii (FOSSIL) Š. Brusina, 1897 †
Undulotheca rotundata (FOSSIL) Gorjanovic-Kramberger,1923 †
Valenciennius roumaniensis (FOSSIL) (R.B. Newton, 1905 †)
Pseudisidora rubella (I. Lea, 1841)
Radix rubiginosa (J.L.H. Michelin, 1831)
Velutinopsis rugosa (FOSSIL) (Gorjanovic-Kramberger,1901 †)
Zagrabica rugosa (FOSSIL) N.I. Andrusov, 1909 †
Lymnaea rupestris W.L. Paraense, 1982
Galba sandbergeri (FOSSIL) (Lomnicki, 1886 †)
Stagnicola saridalensis A. Mozley, 1934