There are numerous species of molluscs living in the wild in Bulgaria. This list covers only the non-marine species.
Freshwater gastropods
Neritidae Theodoxus danubialis (C. Pfeiffer, 1828)Dilian Georgiev & Zdravko Hubenov (2013). "Freshwater snails (Mollusca: Gastropoda) of Bulgaria: an updated annotated checklist". Folia Malacologica 21(4): 237-263. DOI:10.12657/folmal.021.026 Theodoxus fluviatilis (Linnaeus, 1758) Theodoxus pallasi Linholm, 1924 Theodoxus transversalis (C. Pfeiffer, 1828) - striped nerite
Viviparidae Viviparus acerosus (Bourguignat, 1862) Viviparus contectus (Millet, 1813) Viviparus viviparus (Linnaeus, 1758)
Melanopsidae Melanopsis parreyssi Philippi, 1847 Esperiana (Esperiana) esperi (A. Férussac, 1823) Esperiana (Microcolpia) daudebartii (Prevost, 1821) Holandriana holandrii (C. Pfeiffer, 1828)
Pyrgulidae Turricaspia (Laevicaspia) lincta (Milaschewitch, 1908) Turricaspia (Clessiniola) variabilis (Eichwald, 1838)
Bithyniidae Bithynia (Bithynia) danubialis Glöer et Georgiev, 2012 Bithynia (Bithynia) tentaculata (Linnaeus, 1758) Bithynia (Codiella) rumelica Wohlberedt, 1911
Bythinellidae Bythinella aneliae Georgiev et Stoycheva, 2011Dilian Georgiev & Slaveya Stoycheva (2011). "A new spring-snail species (Mollusca: Gastropoda: Risooidea) from Stara Planina Mountain, Bulgaria". Bul. Shk., Ser. Shk. Nat. 61: 97-100. Bythinella angelovi Glöer et Georgiev, 2011 Bythinella dedovi Glöer et Georgiev, 2011 Bythinella dierckingi Glöer et Georgiev, 2011 Bythinella elenae Glöer et Georgiev, 2011 Bythinella fabiae Georgiev, Schneppart & Dedov, 2022 Bythinella gloeeri Georgiev, 2009Peter Glöer & Dilian Georgiev (2011). „Bulgaria, A hot spot of biodiversity (Gastropoda: Rissooidea)?“. Journal of Conchology 40(5): 1-16.Georgiev, D. 2009: Bythinella gloeeri n. sp. – A New Cave Inhabiting Species from Bulgaria (Gastropoda: Risooidea: Hydrobiidae). Acta Zoologica Bulgarica, 61(3): 223-227. Bythinella hansboetersi Glöer et Pešiæ, 2006Glöer, P. & Pešić, V. 2006: Bythinella hansboetersi n. sp., a new species from Bulgaria. – Heldia, 6(3/4): 11–15. Bythinella izvorica Glöer et Georgiev, 2011 Bythinella kleptuzica Glöer et Georgiev, 2011 Bythinella margritae Glöer et Georgiev, 2011 Bythinella markovi Glöer et Georgiev, 2009Peter Glöer & Dilian Georgiev (2009). „New Rissooidea from Bulgaria (Gastropoda: Rissooidea)“. Mollusca 27(2): 123-136. Bythinella ravnogorica Glöer et Georgiev, 2009 Bythinella rhodopensis Glöer et Georgiev, 2011 Bythinella rilaensis Georgiev et Glöer, 2013 Bythinella slaveyae Glöer et Georgiev, 2011 Bythinella smolyanica Glöer et Georgiev, 2011 Bythinella srednogorica Glöer et Georgiev, 2009 Bythinella stoychevae Georgiev, 2011 Bythinella temelkovi Georgiev & Glöer, 2014Georgiev D. & Glöer P. (2014). "A new species of Bythinella from Strandzha Mountain, SE Bulgaria (Gastropoda: Risooidea)". Ecologica Montenegrina 1(2): 78-81. PDF . Bythinella valkanovi Glöer et Georgiev, 2011 Bythinella vidinovae Dedov, Taseva & Georgiev, 2021Dedov, Ivaylo K.; Taseva, Mila A.; Georgiev, Dilian G. (2021). "Bythinella vidinovae — a new species (Mollusca: Gastropoda: Bythinellidae) from the Pirin Mountains, south-western Bulgaria". Archiv für Molluskenkunde 150(2): 107-110. DOI: 10.1127/arch.moll/150/107-110 Bythinella walkeri Glöer et Georgiev, 2009 Strandzhia bythinellopenia Georgiev et Glöer, 2013
Hydrobiidae Balkanica yankovi Georgiev, 2011Dilian Georgiev (2011). „New species of snails (Mollusca: Gastropoda: Risooidea) from cave waters of Bulgaria“. Bul. Shk., Ser. Shk. Nat. 61: 83-96. Balkanospeum schniebsae (Georgiev, 2011) Caspia milae Boeters, Glöer, Georgiev & Dedov, 2015 Cavernisa zaschevi (Angelov, 1959) Devetakia apostoloui Georgiev, Dedov & Taseva, 2022 Devetakia krushunica Georgiev et Glöer, 2011Dilian Georgiev & Peter Glöer (2011). „Two New Species of a New Genus Devetakia gen. n. (Gastropoda: Hydrobiidae) from the Caves of Devetashko Plateau, North Bulgaria“. Acta Zoologica Bulgarica 63(1): 11-15. Devetakia mandrica Georgiev, 2012Dilian Georgiev (2012). „New Taxa of Hydrobiidae (Gastropoda: Risooidea) from Bulgarian Cave and Spring Waters“. Acta Zoologica Bulgarica 64(2): 113-121. Devetakia pandurskii Georgiev et Glöer, 2011 Devetakia veselinae Georgiev & Glöer, 2015 Devetakiola devetakium (Georgiev et Glöer, 2013) Gloeria bulgarica Georgiev, Dedov et Varadinova, 2012Dilian Georgiev, Ivailo Dedov, Svetoslav Cheshmedjiev & Emilia Varadinova (2012). „Gloeria bulgarica gen. et sp. nov. (Gastropoda: Hydrobiidae), a new freshwater mollusk from Bulgaria“. Spira 4(3–4): 105-108. Grossuana angeltsekovi Glöer et Georgiev, 2009 Grossuana codreanui (Grossu, 1946) Grossuana derventica Georgiev et Glöer, 2013 Grossuana falniowskii Georgiev, Glöer, Dedov & Irikov, 2015 Grossuana slavyanica Georgiev et Glöer, 2013 Grossuana thracica Glöer et Georgiev, 2009 “Hauffenia” lucidula (Angelov, 1967) Hydrobia acuta Draparnaud, 1805 Insignia macrostoma Angelov, 1972 Kolevia bulgarica Georgiev & Glöer, 2015 Microstygia deltchevi Georgiev & Glöer, 2015 Plagigeyeria procerula (Angelov, 1965) Pontobelgrandiella angelovi (Pintér, 1968)Dilian Georgiev (2011). „New localities of four Bulgarian endemic Hydrobiidae species (Mollusca: Gastropoda: Risooidea)“. ZooNotes 16: 1-4. Pontobelgrandiella bachkovoensis (Glöer et Georgiev, 2009) Pontobelgrandiella bulgarica (Angelov, 1972) Pontobelgrandiella bureschi (Angelov, 1976) Pontobelgrandiella delevae (Georgiev & Glöer, 2015) Pontobelgrandiella dobrostanica (Glöer et Georgiev, 2009) Pontobelgrandiella hessei (A. Wagner, 1927) Pontobelgrandiella lomica (Georgiev & Glöer, 2015) Pontobelgrandiella maarensis (Georgiev, 2013) Pontobelgrandiella nitida (Angelov, 1972) Pontobelgrandiella pandurskii (Georgiev, 2011)Dilian Georgiev (2011). „A New Species of Belgrandiella (Wagner 1927) (Mollusca: Gastropoda) from Caves in Northern Bulgaria“. Acta Zoologica Bulgarica 63(1): 7-10. Pontobelgrandiella pussila (Angelov, 1959) Pontobelgrandiella stanimirae (Georgiev, 2011) Pontobelgrandiella tanevi Georgiev, 2013 Pontobelgrandiella zagoraensis (Glöer et Georgiev, 2009) Radomaniola aytosensis (Georgiev, 2012) Radomaniola bulgarica Glöer et Georgiev, 2009 Radomaniola radostinae (Georgiev, 2012) Radomaniola rhodopensis Glöer et Georgiev, 2009 Radomaniola strandzhica Georgiev et Glöer, 2013 Stoyanovia stoyanovi (Georgiev, 2013)
Lithoglyphidae Lithoglyphus naticoides (C. Pfeiffer, 1828) Lithoglyphus pyramidatus von Möllendorf, 1873
Moitessieriidae Bythiospeum bechevi Georgiev & Glöer, 2013 Bythiospeum buresi (A. Wagner, 1928) Bythiospeum copiosum (Angelov, 1972) Bythiospeum dourdeni Georgiev, 2012Dilian Georgiev (2012). „Two New Species of Stygobiotic Snails from the Genus Bythiospeum (Gastropoda: Hydrobiidae) from Bulgaria“. Acta Zoologica Bulgarica 64: 15-18. Bythiospeum iltchoi Georgiev & Glöer, 2015 Bythiospeum iltchokolevi Georgiev & Glöer, 2015 Bythiospeum jazzi Georgiev & Glöer, 2013 Bythiospeum juliae Georgiev & Glöer, 2015 Bythiospeum kolevi Georgiev, 2013 Bythiospeum pandurskii Georgiev, 2012 Bythiospeum simovi Georgiev, 2013 Iglica acicularis Angelov, 1959
Tateidae Potamopyrgus antipodarum (J. E. Gray, 1843)
Valvatidae Valvata (Valvata) cristata O. F. Müller, 1774 Valvata (Tropidina) macrostoma (Mörch, 1864) - large-mouthed valve snail Valvata (Cincinna) piscinalis (O. F. Müller, 1774) - European valve snail Borysthenia naticina (Menke, 1845)
Acroloxidae Acroloxus lacustris (Linnaeus, 1758)
Lymnaeidae Galba truncatula (O. F. Müller, 1774) Stagnicola corvus (Gmelin, 1791) Stagnicola montenegrinus Glöer et Pešić, 2009 Stagnicola palustris (O. F. Müller, 1774) Ampullaceana balthica (Linnaeus, 1758) Ampullaceana lagotis (Schrank, 1803) Peregriana peregra (Rossmässler, 1835) Radix auricularia (Linnaeus, 1758) Myxas glutinosa (O. F. Müller, 1774) Lymnaea stagnalis (Linnaeus, 1758)
Physidae Physa fontinalis (Linnaeus, 1758) Physella acuta (Draparnaud, 1805) Aplexa hypnorum (Linnaeus, 1758)
Planorbidae Planorbarius corneus (Linnaeus, 1758) Planorbis carinatus O. F. Müller, 1774 Planorbis planorbis (Linnaeus, 1758) Anisus (Anisus) leucostoma (Millet, 1813) Anisus (Anisus) septemgyratus (Rossmässler, 1835) Anisus (Anisus) spirorbis (Linnaeus, 1758) Anisus (Disculifer) vortex (Linnaeus, 1758) Anisus (Disculifer) vorticulus (Troschel, 1834) Bathyomphalus contortus (Linnaeus, 1758) Gyraulus (Gyraulus) albus (O. F. Müller, 1774) Gyraulus (Armiger) crista (Linnaeus, 1758) Gyraulus (Lamorbis) piscinarum Bourguignat, 1852 Gyraulus (Torquis) parvus (Alder, 1838) Hippeutis complanatus (Linnaeus, 1758) Segmentina nitida (O. F. Müller, 1774) Ferrissia californica (Tryon, 1863) Ancylus fluviatilis O. F. Müller, 1774 Ancylus recurvus Martens, 1873
Land gastropods
Aciculidae Platyla oedogyra (Paladilhe, 1868) Platyla orthostoma Jankiewicz, 1979 Platyla polita (Hartmann, 1840)
Pomatiidae Pomatias elegans (O.F. Müller, 1774) Pomatias rivularis (Eichwald, 1829)
Ellobiidae Carychium minimum O.F. Müller, 1774 Carychium tridentatum (Risso, 1826) Myosotella myosotis (Draparnaud, 1801)
Succineidae Succinea putris (Linnaeus, 1758)Georgiev D. G. (2006). "Two new species from the family Succineidae (Beck, 1837) (Gastropoda: Pulmonata) to the fauna of Bulgaria". Scientific Studies of the University of Plovdiv, Biology, Animalia 41: 7-11. PDF. Succinella oblonga (Draparnaud, 1801) Oxyloma elegans (Risso, 1826) Oxyloma sarsii (Esmark, 1886)
Cochlicopidae Cochlicopa lubrica (O.F. Müller, 1774) Cochlicopa lubricella (Porro, 1838) Cochlicopa nitens (Gallenstein, 1852)
Argnidae Agardhiella macrodonta (Hesse, 1916) Agardhiella parreysii (L. Pfeiffer, 1848) Agardhiella rumelica (Hesse, 1916)
Chondrinidae Chondrina arcadica (Reinhardt, 1881) Chondrina avenacea (Bruguière, 1729) Granaria frumentum (Draparnaud, 1801)
Lauriidae Lauria cylindracea (Da Costa, 1778) Leiostyla schweigeri Götting, 1963
Orculidae Orcula zilchi Urbański, 1960 Orculella bulgarica (Hesse, 1915) Pagodulina subdola brabeneci Hudec et Vašatko, 1971 Sphyradium doliolum (Bruguiere, 1792)
Pupillidae Pupilla muscorum (Linnaeus, 1758) Pupilla sterri (Voith, 1838) Pupilla triplicata (Studer, 1820)
Pyramidulidae Pyramidula pusilla (Vallot, 1801)
Spelaeodiscidae Aspasita bulgarica Subai & Dedov, 2008 Aspasita triaria triaria (Rossmässler, 1839)
Truncatellinidae Truncatellina claustralis (Gredler, 1856) Truncatellina costulata (Nilsson, 1822) Truncatellina cylindrica (Férussac, 1807)
Valloniidae Acanthinula aculeata (Müller, 1774) Vallonia costata O. F. Müller, 1774) Vallonia enniensis (Gredler, 1856) Vallonia excentrica Sterki, 1892 - eccentric vallonia Vallonia pulchella (O. F. Müller, 1774) - lovely vallonia
Vertiginidae Vertigo alpestris (Alder, 1830) Vertigo angustior Jeffreys, 1830 - narrow-mouthed whorl snail Vertigo antivertigo (Draparnaud, 1801) Vertigo moulinsiana (Dupuy, 1849) - Desmoulin's whorl snail Vertigo pusilla O. F. Müller, 1774 Vertigo pygmaea (Draparnaud, 1801) - crested vertigo Vertigo substriata (Jeffreys, 1830)
Enidae Chondrula macedonica A. J. Wagner, 1915 Chondrula microtraga (Rossmässler, 1839) Chondrula tricuspidata (Küster, 1841) Chondrula tridens (Müller, 1774) Chondrus zebra tantalus (L. Pfeiffer, 1868) Ena montana (Draparnaud, 1801) Eubrephulus bicallosus (L. Pfeiffer, 1847) Leucomastus kindermanni (L. Pfeiffer, 1853) Mastus rossmaessleri (L. Pfeiffer, 1846) Mastus carneolus (Mousson, 1863) Mastus etuberculatus (Frauenfeld, 1867) Merdigera obscura (O. F. Müller, 1774) Multidentula ovularis (Olivier, 1801) Multidentula squalina (Rossmässler, 1848) Pseudochondrula seductilis (Rossmässler, 1846) Zebrina detrita (O. F. Müller, 1774) - striped wood snail Zebrina varnensis (L. Pfeiffer, 1847)
Clausiliidae