• Conus moluccensis Küster, 1838
• Conus monachus Linnaeus, 1758
• Conus moncuri Filmer, 2005
• Conus monicae (Petuch & Berschauer, 2015)
• Conus monile Hwass, 1792
• Conus monilifer Broderip, 1833
• Conus montillai Röckel, 1985
• Conus moolenbeeki Filmer, 2011
• Conus moreleti Crosse, 1858
• Conus mozambicus Hwass, 1792
• Conus mpenjatiensis (S.G.Veldsman, 2016)
• Conus mucronatus Reeve, 1843
• Conus mulderi Fulton, 1936
• Conus muriculatus G.B.Sowerby I, 1833
• Conus mus Hwass, 1792
• Conus musicus Hwass, 1792
• Conus mustelinus Hwass, 1792
• Conus nahoonensis (S.G.Veldsman, 2016)
• Conus namocanus Hwass, 1792
• Conus nanus G.B.Sowerby I, 1833
• Conus naranjus Trovão, 1975
• Conus natalaurantius (S.G.Veldsman, 2013)
• Conus natalis G.B.Sowerby II, 1858
• Conus navarroi Rolán, 1986
• Conus neptunus Reeve, 1843
• Conus niederhoeferi (Monnier, Limpalaër & Lorenz, 2012)
• Conus nielsenae Marsh, 1962
• Conus nigromaculatus Röckel & Moolenbeek, 1992
• Conus nigropunctatus G.B.Sowerby II, 1858
• Conus nimbosus Hwass, 1792
• Conus nobilis Linnaeus, 1758
• Conus nobilis skinneri da Motta, 1982
• Conus nobilis victor Broderip, 1842
• Conus nobrei Trovão, 1975
• Conus nocturnus (Lightfoot), 1786
• Conus nodulosus G.B.Sowerby II, 1864
• Conus norai da Motta & G.Raybaudi Massilia, 1992
• Conus nucleus Reeve, 1848
• Conus nussatella Linnaeus, 1758
• Conus nux Broderip, 1833
• Conus nybakkeni (Tenorio, J.K.Tucker & Chaney, 2012)
• Conus ochroleucus Gmelin, 1791
• Conus oishii (Shikama, 1977)
• Conus omaria Hwass, 1792
• Conus orion Broderip, 1833
• Conus ostrinus (J.K.Tucker & Tenorio, 2011)
• Conus papilliferus G.B.Sowerby I, 1834
• Conus papuensis Coomans & Moolenbeek, 1982
• Conus paraguana Petuch, 1987
• Conus parius Reeve, 1844