1. Nakadaella Ancey 1904
2. Nannosalarias Smith-Vaniz & Springer 1971
3. Narke Kaup 1826
4. Naso Lacépède 1801
5. Nassarius Duméril 1805
6. Nasturtium R. Brown
7. Naucrates Rafinesque 1810
8. Nausithoe Kölliker 1853
9. Nealotus Johnson 1865
10. Neanthes Kinberg 1865
11. Nebalia Leach 1814
12. Nebria Latreille 1802
1. N. (Nippononebria)
2. N. (Sadonebria)
13. Necator Stiles 1903
14. Negaprion Whitley 1940
15. Nelumbo M. Adanson
16. Nematocarcinus A. Milne-Edwards 1881
17. Nematodirus Ransom 1907
18. Nematonereis Schmarda 1861
19. Nematopagurus A. Milne Edwards & Bouvier 1892
20. Nematopodius Gravenhorst 1829
21. Nematospiroides Baylis 1926
22. Nematus Panzer 1801
23. Nemipterus Swainson 1839
24. Nemopilema
25. Nemotaulius Banks 1906
26. Neoacasta Kolbasov 1993
27. Neoachmandra
28. Neoamphitrite Hessle 1917
29. Neobenedenia Yamaguti 1963
30. Neobythites Goode & Bean 1885
31. Neocaridina Kubo 1938
32. Neochauliodes van der Weele 1909
33. Neoclinus Girard 1858
34. Neocrangon Zarenkov 1965
35. Neocyclops Gurney 1927
36. Neodiplostomum
37. Neoditrema Steindachner 1883
38. Neodon Carne 1957
39. Neoepinnula Matsubara & Iwai 1952
40. Neoergasilus Yin 1956
41. Neoglyphidodon Allen 1991
42. Neoheligmonella Durette-Desset 1971
43. Neohemithyris Yabe & Hatai 1934
44. Neohermes Banks 1908
45. Neoheterobothrium
46. Neolomentaria
47. Neolygus Knight 1917
48. Neomyas Allen 1980
49. Neomys Kaup 1829
50. Neoniphon Castelnau 1875
51. Neoplagioporus Shimazu 1990
52. Neopomacentrus Allen 1975
53. Neorhynchia Thomson 1915
54. Neosebastes Guichenot 1867
55. Neosynchiropus Nalbant 1979
56. Neothyonidium Deichmann 1938
57. Neothyris Douvillé 1879
58. Neotrapezium Habe 1951
59. Neotrevathana Ross 1999
60. Nephropsis Wood-Mason 1872
61. Nephtys Cuvier 1817
62. Neptis Fabricius 1807
63. Nereiphylla Blainville 1828
64. Nereis Linnaeus 1758
65. Nerita Linnaeus 1758
66. Nerocila Leach 1818
67. Nesidiocoris Kirkaldy 1902
68. Nesochthamalus Foster & Newman 1987
69. Nesodiprion Rohwer 1918
70. Nesogaster Verhoeff 1902
71. Nesokia Gray 1842
72. Neureclipsis MacLachlan 1864
73. Neuroterus Hartig 1840
74. Neverita Risso 1826
75. Nialoe Tanaka 1958
76. Nicon Kinberg 1866
77. Nicrophorus Fabricius 1775
78. Nihonotrypaea Manning & Tamaki 1998
79. Niotha H. Adams & A. Adams 1853
80. Nipergasilus Yin 1949
81. Nipponacmea Sasaki & Okutani 1993
82. Nipponithyris Yabe & Hatai 1934
83. Nipponnemertes Friedrich 1968
84. Nipponocypris Chen, Wu & Hsu 2008
85. Nippononebria Uéno 1955
86. Nippostrongylus Lane 1923
87. Nitidotellina Scarlato 1961
88. Nitokra Boeck 1865
89. Nitrobacter Winogradsky 1892
90. Nitrosomonas Winogradsky 1892
91. Niviventer J.T. Marshall 1976
92. Niwaella Nalbant 1963
93. Nobia Sowerby 1839
94. Noctiluca Suriray 1836
95. Nodilittorina Martens 1897
96. Noemacheilus Bleeker 1863
97. Nomada Scopoli 1770
98. Norileca Bruce 1990
99. Noterus Clairville 1806
100. Notiophilus Duméril 1806
101. Notodromus Lilljeborg 1853
102. Notomastus Sars 1850
103. Notonecta Linnaeus 1758
104. Notoplax H. Adams 1862
105. Notopygos Grube 1855
106. Notosaria Cooper 1959
107. Notostomum Levinsen 1882
108. Novaculoides J.E. Randall & Earle 2004
109. Novocrania Lee & Brunton 2001
110. Nuchequula Whitley 1932
111. Nucula Lamarck 1799
112. Nursia Learch 1817
113. Nuttallia Dall 1898
114. Nyctereutes Temminck 1839
115. Nycteribia Latreille 1796
116. Nycticorax T. Forster 1817
117. Nylanderia Emery 1906
118. Nymphaster Sladen 1889
119. Nymphoides J-F. Séguier
120. Nymphonella Ohshima 1927