- waitei Hedley, 1903 = Penion mandarinus (family Buccinidae – Siphonaliinae)
- walteri Hector, 1877 = Anomia trigonopsis (family Anomiidae – Anomiinae)
- warringa Stranks, 1990 = Octopus warringa (family Octopodidae – Octopodinae)
- waterhousei A. Adams & Angas, 1864 = Cabestana tabulata (family Ranellidae – Cymatiinae)
- weedingi Cotton, 1939 = Clanculus dunkeri (family Trochidae – Trochinae)
- weedingi Cotton, 1944 = Protoginella geminata (family Marginellidae – Marginellinae)
- weldii Tenison Woods, 1875 = Ctenagodus weldii (family Siliquariidae – Siliquariinae)
- weldii Tenison Woods, 1876 = Cirsonella weldii (family Turbinidae – Skeneinae)
- weldii Tenison Woods, 1877 = Notogibbula preissiana (family Trochidae – Trochinae)
- weldii Tenison Woods, 1878 = Austromitra analogica (family Costellariidae)
- wellingtonensis Abraham, 1877 = Archidoris wellingtonensis (family Dorididae)
- westerniensis D’Orbigny, 1834 = Octopus superciliosus (family Octopodidae – Octopodinae)
- westralis Burn, 1966 = Austraeolis ornata (family Facelinidae – Favorininae)
- whani Pritchard & Gatliff, 1900 = Balanetta whani (family Marginellidae – Marginellinae)
- whitehousei Colman, 1959 = Haliotis rubra (family Haliotidae)
- wilfredi Gatliff and Gabriel, 1911 = Rissoella wilfredi (family Rissoellidae)
- wilkinsi Grifiths, 1962 = Notocypraea piperita (family Cypraeidae – Pustulariinae)
- wilsonensis Gatliff & Gabriel, 1913 = Attenuata wilsonensis (family Rissoidae – Rissoinae)
- wilsoni E.A. Smith, 1886 = Mysticoncha wilsoni (family Velutinidae – Lamellariinae)
- wilsoni Ponder & Yoo, 1976 = Pisinna tumida (family Anabathridae)
- wilsoni Pritchard & Gatliff, 1898 = Coralliophila wilsoni (family Muricidae – Coralliophilinae)
- wilsoni Tate, 1889 = Roburnella wilsoni (family Oxynoidae)
- wollumbi Garrard, 1972 = Colpospira wollumbi (family Turritellidae – Turritellinae)
- woodsi Beddome, 1883 = Splendrillia woodsi (family Drillidae)
- woodsi Pritchard & Gatliff, 1902 = Pisinna approxima (family Anabathridae)