Nassaria nivea (J.F. Gmelin, 1790) Marshall Islands, Kwajalein Atoll
Nassarius niveus (A. Adams, 1852) Ivory coast, Abidjan23,4 mm
Nassarius niveus scopularcus K.H. Barnard, 1958 South Africa, Cape18,6 mm
Nassarius nobilis (K.H.J. Thiele, 1925) Indonesia
Nassarius nodicinctus Adams, 1852 Bay of Panama15 mm
Phos nodicostatus A. Adams, 1851 South Africa, Natal14,9 mm
Nassarius nodicostatus (A. Adams, 1852)
Nassarius nodifer (W.L. Powys, 1835) South China Sea32 mm
Dorsanum nodosocostatum (FOSSIL) Hilber, 1879 † Hungary, Borsodbóta9 mm
Keepingia nodulina (FOSSIL) (Garvie, 2013 †) Texas, Bastrop County9 mm
Keepingia nodulina meta (FOSSIL) (Garvie, 2013 †) Texas, Bastrop County7,6 mm
Nassarius nodulosus (F.P. Marrat, 1873) Somalia, Mogadiscio13,2 mm
Nassarius noguchii (T. Habe, 1958) Philippines, Aliguay Island13,9 mm
Northia northiae (Gray in E. Griffith& E. Pidgeon, 1833) Panama57 mm
Northia northiae miocenica (FOSSIL) A.A. Olsson, 1922 † Costa Rica38 mm
Engoniophos notatus (G.B. II Sowerby, 1859) Venezuela12,7 mm
Nassarius notoensis (FOSSIL) O. Masuda, 1956 †
Nassarius novaehollandiae L.A. Reeve, 1845 Réunion16,9 mm
Nassarius novaezelandiae (L.A. Reeve, 1854) Indonesia, Aru14,6 mm
Nassarius nuceus (W.H. Pease, 1869) Micronesia, Caroline Islands
Nassarius nucleolus (R.A. Philippi, 1846) Ecuador14 mm
Bullia nuttalli R.N. Kilburn, 1978 Mozambique
Nassarius nuttalli (FOSSIL) (N.H. Ludbrook, 1978 †) Spain, Andalusia37 mm
Hebra oberwimmeri (H.B. Preston, 1907) Solomon Islands14,6 mm
Nassarius obesus (G. Nevill & H. Nevill,1875) Sri Lanka
Cyllene obliqua L.C. Kiener, 1849 Congo, Pointe Noire11,7 mm
Nassarius obliquatus (FOSSIL) (G.B. Brocchi, 1814 †) Italy, Lombardia Region41 mm
Nassarius oblitus (FOSSIL) L.M.D. Bellardi, 1882 † France, Aquitaine14 mm
Tritia obsoleta (T. Say, 1822) Florida22,5 mm
Demoulia obtusata (J.H.F. Link, 1807) Senegal, Dakar24 mm
Nassarius ocellatus H.H. Kool & J. Galindo,2014 Philippines, Panglao Island5,7 mm
Nassaria okinavia (Mac Neil, 1960)
Nassarius olivaceus (J.G. Bruguière, 1789) Philippines, Bohol42 mm
Nassarius olomea E.A. Kay, 1979 Hawaii, Oahu15 mm
Globinassa olssoni (FOSSIL) E.J. Petuch, 1994 † Florida, Palm Beach County15 mm