The non-marine molluscs of Mongolia are a part of the fauna of Mongolia. They include land and freshwater gastropods and freshwater bivalves.
Freshwater gastropods
Valvatidae
Valvata antiqua Morris, 1838
Valvata brevicula Kozhov, 1936
Valvata confusa Westerlund, 1897
Valvata piscinalis (O. F. Müller, 1774) Valvata sibirica Middendorff, 1851
Lymnaeidae
Galba sibirica (Westerlund, 1885) Ladislavella terebra (Westerlund, 1885) Lymnaea stagnalis (Linnaeus, 1758) Orientogalba hookeri (Reeve, 1850) Orientogalba viridis (Quoy et Gaimard, 1833) Radix auricularia (Linnaeus, 1758) Radix bactriana (Hutton, 1849) Radix balthica (Linnaeus, 1758) Radix intermedia (Lamarck, 1822) Radix lagotis (Schrank, 1803) Radix mongolica (Yen, 1939) Radix obliquata (Martens, 1864) Radix parapsilia Vinarski et Glöer, 2009 Radix tumida (Held, 1836) Radix zazurnensis (Mozley, 1934)
Physidae
Physa fontinalis (Linnaeus, 1758) Physa taslei Bourguignat, 1860 Sibirenauta tuwaensis Starobogatov et Zatravkin in Starobogatov, Prozorova et Zatravkin, 1989
Planorbidae
Armiger annandalei (Germain, 1918) Armiger crista (Linnaeus, 1758) Bathyomphalus contortus (Linnaeus, 1758) Choanomphalus mongolicus Kozhov, 1946 Gyraulus chinensis (Dunker, 1848) Gyraulus infraliratus (Westerlund, 1876) Gyraulus kruglowiae (Johansen, 1937) Gyraulus sibiricus (Dunker, 1848) Gyraulus stroemi (Westerlund, 1881) Gyraulus terekholicus (Prozorova et Starobogatov, 1997) Helicorbis kozhovi Starobogatov et Streletzkaja, 1967 Polypylis sibirica Starobogatov et Streletzkaja, 1967