- racketti Donovan, 1825 = Fulvia tenuicostata (family Cardiidae – Laevicardiinae)

- radians Lamarck, 1819 = Glycymeris radians (family Glycymerididae)

- radiata nutata Hedley, 1908 = Williamia radiata nutata (family Siphonariidae)

- radiata Hedley, 1905 = Borniola radiata (family Galeommatidae)

- radula E. A. Smith, 1885 = Barbatia pistachia (family Arcidae – Arcinae)

- radulaeformis Weinkauff, 1876 = Inquisitor radulaeformis (family Turridae – Crassispirinae)

- ramburi Crosse, 1864 = Prothalotia lehmanni (family Trochidae – Trochinae)

- ramosus Cantraine, 1835 = Kaloplocamus ramosus (family Polyceridae – Triophinae)

- rangiana d’Orbigny, 1837 = Aplysia juliana (family Aplysiidae – Aplysiinae)

- raouli Angas, 1872 = Cardiocardita raouli (family Carditidae)

- raphaeli Tenison Woods, 1876 = Clanculus philippi (family Trochidae – Trochinae)

- recens Tate, 1897 = Solamen recens (family Mytilidae)

- recta Hedley, 1903 = Austrocarina recta (family Turridae – Unplaced)

- recta Reeve, 1860 = Laternula rostrata (family Laternulidae)

- recurvatus Verco, 1909 = Gemixystus recurvatus (family Muricidae – Trophoninae)

- reevei Hanley, 1862 = Adelphotectonica reevei (family Architectonicidae – Architectonicinae)

- reflecta Laseron, 1954 = Cirsonella reflecta (family Turbinidae – Skeneinae)

- regillus Iredale, 1929 = Spondylus tenellus (family Spondylidae)

- regularis Gould, 1859 = Adamnestia arachis (family Cylichnidae)

- reinhardti Steenstrup, 1856 = Liocranchia reinhardti (family Cranchiidae)

- relata Cotton, 1942 = Cryptassiminea buccinoides (family Assimineidae – Assimineinae)

- relata Cotton, 1944 = Pisinna varicifera (family Anabathridae)

- relata Iredale, 1936 = Adelphotectonica reevei (family Architectonicidae – Architectonicinae)

- remo Brazier, 1898 = Conus anemone (family Conidae – Coninae)

- renovata Iredale, 1929 = Cancellaria undulata (family Cancellariidae – Cancellariinae)

- repens Mörch, 1862 = Serpulorbis sipho (family Vermetidae – Vermetinae)

- resplendens Bednall & Matthews, 1906 = Ischnochiton smaragdinus (family Ischnochitonidae – Ischnochitoninae)

- retiarium Hedley & May, 1908 = Selastele retiarium (family Calliostomatidae – Calliostomatinae)

- reticulata Blainville, 1832 = Phycothais reticulata (family Muricidae – Rapaninae)

- reticulata Gmelin, 1791 = Barbatia reticulata (family Arcidae – Arcinae)

- reticulata Reeve, 1862 = Phasianella ventricosa (family Phasianellidae – Phasianellinae)

- reticulata Semper, 1882 = Onchidella nigricans (family Onchidiidae)

- reticulata Tenison Woods, 1876 = Venerupis anomala (family Veneridae – Tapetinae)

- reticulatus A. Adams, 1855 = Colubraria mestayerae (family Colubrariidae)

- reticulifera Schilder, 1924 = Notocypraea piperita (family Cypraeidae – Pustulariinae)

- retrocurvata Verco, 1909 = Austromitra analogica (family Costellariidae)

- retusus Verco, 1907 = Acteon retusus (family Acteonidae – Acteoninae)

- rex Iredale, 1924 = Abranda modestina (family Tellinidae – Tellininae)

- rex Iredale, 1926 = Sepia hedleyi (family Sepiidae)

- rhodanos Houart, 2004 = Gemixystus rhodanos (family Muricidae – Trophoninae)

- rhodia Reeve, 1845 = Mitra badia (family Mitridae – Mitrinae)

- rhodostomum A. Adams, 1855 = Ataxocerithium serotinum (family Newtoniellidae – Ataxocerithiinae)

- rhomboidalis Verco, 1907 = Lissarca rhomboidalis (family Limopsidae)

- rhyllensis Gatliff & Gabriel, 1908 = Rissoina rhyllensis (family Rissoidae – Rissoininae)

- rhynchaena Jonas, 1844 = Lutraria rhynchaena (family Mactridae – Lutrariinae)

- rhytiphora Lamy, 1935 = Katelysia rhytiphora (family Veneridae – Tapetinae)

- riisei Steenstrup, 1882 = Brachioteuthis riisei (family Brachioteuthidae)

- ringens May, 1919 = Cystiscus angasi (family Cystiscidae – Cystiscinae)

- ringens Philippi, 1846 = Clanculus personatus (family Trochidae – Trochinae)

- roadnightae McCoy, 1881 = Livonia roadnightae (family Volutidae – Cymbiinae)

- roblini Tenison Woods, 1876 = Mitrella leucostoma (family Columbellidae – Atiliinae)

- roborata Hanley, 1844 = Placamen placidum (family Veneridae – Chioninae)

- robsoni Adam, 1962 = Moroteuthis robsoni (family Onychoteuthidae)

- robusta Laseron, 1954 = Aclophoropsis maculosa (family Triphoridae – Triphorinae)

- robusta Petterd, 1884 = Scalenostoma lodderae (family Eulimidae)

- rosea Angas, 1867 = Tricolia rosea (family Phasianellidae – Tricoliinae)

- rosea Iredale, 1924 = Incisura rosea remota (family Scissurellidae – Scissurellinae)

- rosea Lamarck, 1822 = Phasianotrochus eximius (family Trochidae – Trochinae)

- rosea Tenison Woods, 1876 = Argalista rosea (family Turbinidae – Colloniinae)

- rosenthali Iredale, 1932 = Bankia australis (family Teredinidae – Bankiinae)

- roseola Iredale, 1936 = Tellinella albinella (family Tellinidae – Tellininae)

- roseo-tinctus Sowerby, 1866 = Conus anemone (family Conidae – Coninae)

- rosettae Angas, 1865 = Mitra badia (family Mitridae – Mitrinae)

- roseus Quoy & Gaimard, 1834 = Maoricolpus roseus (family Turritellidae – Turritellinae)

- rossiteri Brazier, 1870 = Conus anemone (family Conidae – Coninae)

- rostellata Tate, 1889 = Gaimardia rostellata (family Cyamiidae)

- rostrata A. Adams, 1850 = Volvulella rostrata (family Retusidae)

- rostrata Sowerby, 1842 = Laternula rostrata (family Laternulidae)

- rostratus Dunker, 1857 = Austromytilus rostratus (family Mytilidae)

- rosulenta Tate, 1887 = Venericardia rosulenta (family Carditidae)

- rotunda Deshayes, 1855 = Kellia rotunda (family Galeommatidae)

- rotunda Laseron, 1953 = Condylocardia notoaustralis (family Condylocardiidae – Condylocardiinae)

- rotunda Laseron, 1953 = Cunanax subradiata (family Condylocardiidae – Condylocardiinae)

- rotundata Sowerby, 1875 = Myadora rotundata (family Myochamidae)

- royana Laseron, 1957 = Gibberula agapeta (family Cystiscidae – Persiculinae)

- rubeolus Burn, 1964 = Eubranchus rubeolus (family Eubranchidae)

- ruber Hedley, 1904 = Notomytilus ruber (family Philobryidae)

- rubicunda Tate & May, 1900 = Onoba rubicunda (family Rissoidae – Rissoinae)

- rubiginosa A. Adams & Angas, 1864 = Petricola rubiginosa (family Petricolidae)

- rubiginosum Valenciennes, 1846 = Astele rubiginosum (family Calliostomatidae – Calliostomatinae)

- rubra Leach, 1814 = Haliotis rubra (family Haliotidae)

- rubraurantiaca Blainville, 1825 = Cellana solida (family Nacellidae)

- rubricata Tate, 1886 = Lissarca rubricata (family Limopsidae)

- rubrilineata Pease, 1871 = Dendrodoris nigra (family Dendrodorididae)

- rudis Reeve, 1858 = Vulsella spongiarum (family Malleidae)

- rudolphi Brazier, 1894 = Litozamia rudolphi (family Muricidae – Trophoninae)

- rudulaeformis Weinkauff, 1876 = Inquisitor radulaeformis (family Turridae – Crassispirinae)

- rufescens Lamarck, 1819 = Mactra rufescens (family Mactridae – Mactrinae)

- rufilabris A. Adams, 1862 = Tatea rufilabris (family Hydrobiidae – Tateinae)

- rufozonata Angas, 1877 = Paramontana rufozonata (family Conidae – Mangeliinae)

- rugifera Dunker, 1862 = Mactra contraria (family Mactridae – Mactrinae)

- rugifera Reeve, 1835 = Codakia rugifera (family Lucinidae)

- rugosa Clarke, 1980 = Octopoteuthis rugosa (family Octopoteuthidae)

- rugosa Quoy & Gaimard, 1834 = Montfortula rugosa (family Fissurellidae – Emarginulinae)

- rugosa Thiele, 1930 = Diodora lineata (family Fissurellidae – Emarginulinae)

- runcinata Watson, 1881 = Colpospira runcinata (family Turritellidae – Turritellinae)

- ruppiae Hedley, 1912 = Ascorhis victoriae (family Hydrobiidae – Hydrobiinae)

- rutila Sowerby, 1851 = Callista kingii (family Veneridae – Pitariinae)

- rutilis A. Adams, 1853 = Phasianotrochus rutilis (family Trochidae – Trochinae)

- rutilus Gould, 1852 = Onychoteuthis banksii (family Onychoteuthidae)

- rutilus Menke, 1843 = Conus rutilus (family Conidae – Coninae)

- rutipina Tenison Woods, 1878 = Ostrea angasi (family Ostreidae – Ostreinae)