Cantharus njalindungensis (FOSSIL) K. Martin, 1921 †
Monostiolum nocturnum G.T. Watters, 2009
Buccinum nodocostum R. Tiba, 1984
Siphonalia nodosa (T. Martyn, 1784)
Neptunea nodositella K. Fraussen & Y. Terryn,2007
Coptochetus nodosus (FOSSIL) F.E. Edwards †
Prosipho nodosus K.H.J. Thiele, 1912
Hydrotribulus nodosus (FOSSIL) B. Wade, 1916 †
Aeneator nodulifer (FOSSIL) (R.A. Philippi, 1887 †)
Kelletia nodulosa (FOSSIL) (Sowerby, 1840 †)
Siphonalia nodulosa A. Adams, 1863
Euthria noligomesi E. Rolán & A. Monteiro,2007
Neptunea nomurai (FOSSIL) Y. Otuka, 1943 †
Cominella norfolkensis (T. Iredale, 1940)
Crassicantharus norfolkensis W.F. Ponder, 1972
Volutopsius norwegicus (J.F. Gmelin, 1791)
Engina notabilis K. Fraussen & M. Chino,2011
Aeneator nothopanax (FOSSIL) C.A. Fleming, 1954 †
Strebela notophila (H. Strebel, 1908)
Crassicantharus noumeensis (J.C.H. Crosse, 1870)
Buccinum nudum (FOSSIL) Wood, 1879 †
Siphonalia nuntia (FOSSIL) A.A. Olsson, 1930 †
Liomesus nux (FOSSIL) (T.A. Conrad 1857 †)
Pseudoliomesus nux (W.H. Dall, 1877)
Celatoconus nux (FOSSIL) (W.H. Dall, 1892 † †)
Engina obliquecostata (L.A. Reeve, 1846)
Pisania obliquecostata (FOSSIL) R. Tate, 1888 †
Buccinum oblitum E.R. Sykes, 1911
Cominella obsoleta (FOSSIL) (Finlay, 1926 †)
Bathydomus obtectus K.H.J. Thiele, 1912
Neptunea occaecata K. Fraussen & Y. Terryn,2007
Plicifusus oceanodromae W.H. Dall, 1919
Buccinum ochotense Middendorf, 1848
Lussivolutopsius ochotensis Y.I. Kantor, 1986
Neptunea ochotensis A.N. Golikov, 1962