Kimberleytrachia nelsonensis F. Criscione & F. Köhler,2015
Chloritis nephele (B. Strubell, 1895)
Micromelon nepouieana G.A. Solem, 1992
Quistrachia nevbrownlowi Stanisic, 2016
Amphidromus ngocanhi Thach, 2017
Amphidromus ngocngai Thach, 2017
Setobaudinia ngurraali F. Köhler, 2011
Amphidromus niasensis H.C. Fulton, 1907
Setobaudinia nicolasi F. Criscione & F. Köhler,2016
Camaena nigricans O.F. von Möllendorff,1900
Planispira nilagerica (L. Pfeiffer, 1845)
Prymnbriareus nimberlinus G.A. Solem, 1981
Olympus nimbus L.R.L. Simone, 2010
Strepsitaurus ningaloo G.A. Solem, 1997
Camaena ninhbinhensis Thach, 2016
Papuina nodifera (L. Pfeiffer, 1861)
Exiligada nodulicauda F. Criscione, A. Law& F. Köhler, 2012
Amphidromus noriokowasoei N.N. Thach & F. Huber,2017
Cupedora nottensis G.A. Solem, 1992
Megalacron novaegeorgensis (J.C. Cox, 1870)
Megalacron novaegeorgensis creta B. Rensch, 1934
Thersites novaehollandiae (J.E. Gray, 1834)
Papuina novaepommeraniae B. Rensch, 1929
Amplirhagada novelta T. Iredale, 1939
Papuina novoguineensis (L. Pfeiffer, 1862)
Sinumelon nullarboricum (R. Tate, 1878)
Austrochloritis nundinalis T. Iredale, 1943
Coniglobus nux (O.F. von Möllendorff,1888)
Coniglobus nux litus C.K. Chang & A. Tada,2000
Coniglobus nux paiwanis J.T. Kuroda, 1941
Papuina obiensis (P. Dautzenberg, 1902)
Papuina obiensis minor P. Dautzenberg, 1902
Xanthomelon obliquirugosa E.A. Smith, 1894
Polydontes obliterata (A.E.J. Férussac, 1821)
Nipponochloritis obscurus (H.A. Pilsbry & Y. Hirase,1904)