1. Habronema Diesing 1861
2. Hachijopagurus Osawa & Okuno 2003
3. Haeckelia Carus 1863
4. Haematoloechus Looss 1899
5. Haemonchus Cobb 1898
6. Halecium Oken 1815
7. Halicephalobus Timm 1956
8. Halichoeres Rüppell 1835
9. Halichondria Fleming 1828
10. Haliclona Grant 1836
11. Halicyclops Norman 1903
12. Halieutaea Valenciennes 1837
13. Halimeda J.V.F. Lamouroux 1812
14. Haliotis Linnaeus 1758
15. Halipegus Looss 1899
16. Haliplanella Hand 1956
17. Haliporoides Stebbing 1914
18. Halityle Fisher 1913
19. Halocercus Baylis & Daubney 1925
20. Halocynthia Verrill 1879
21. Halophila Du Petit-Thouars 1806
22. Halosydna Kinberg 1855
23. Haloxylon Bunge ex E.Fenzl
24. Haltichella Spinola 1811
25. Hamatospiculum Skrjabin 1916
26. Haminoea Turton & Kingston in Carrington 1830
27. Hapalogenys Richardson 1844
28. Haplochis Looss 1899
29. Haplochlaenius Lutshnik 1933
30. Haplochromis Hilgendorf 1888
31. Haploniscus Richardson 1908
32. Haplophragmoides Cushman 1910
33. Haplosyllis Langerhans 1879
34. Harmothoe Kinberg 1855
35. Harpacticella Sars 1908
36. Harpalus Latreille 1802
1. H. (Loboharpalus)
2. H. (Pseudoophonus)
3. H. (Zangoharpalus)
37. Hartigia Schiødte 1838
38. Hawaiarca Dall, Bartsch & Rehder 1938
39. Haworthia Duval
40. Hazeus Jordan & Snyder 1901
41. Hebella Allman 1888
42. Heimyscus
43. Helice De Haan 1833
44. Helicolenus Goode & Bean 1896
45. Heligmonella Mönnig 1927
46. Heligmonina Baylis 1928
47. Heligmonoides Baylis 1928
48. Heligmosomoides Hall 1916
49. Heligmosomum Railliet & Henry 1909
50. Heliocidaris L. Agassiz & Desor 1846
51. Heliocopris Hope 1837
52. Helochares Mulsant 1844
53. Hemiaegina Mayer 1890
54. Hemibarbus Bleeker 1860
55. Hemicarabus Gehin 1885
56. Hemicentrotus Mortensen 1942
57. Hemicyclops Böck 1872
58. Hemiechinus Fitzinger 1866
59. Hemigrammocypris Fowler 1910
60. Hemigrapsus Dana 1851
61. Hemilamprops G.O. Sars 1883
62. Hemipagurus Smith 1881
63. Hemipenaeus Bate 1881
64. Hemisiriella Hansen 1910
65. Hemithiris d'Orbigny 1847
66. Hemizaptyx Pilsbry 1905
67. Henicorhynchus H.M. Smith 1945
68. Heniochus G. Cuvier 1816
69. Henricia Gray 1840
70. Heptacyclus Vasiliev 1939
71. Heptamelus Haliday 1855
72. Herklotichthyes Whitley 1951
73. Hermenia Grube 1856
74. Herpestes Illiger 1811
75. Herpotanais Wolff 1956
76. Hesperibalanus Pilsbry 1916
77. Heterakis Schrank 1790
78. Heteralepas Pilsbry 1907
79. Hetereleotris Bleeker 1874
80. Heterocarpus A.Milne-Edwards 1881
81. Heterocyathus Milne Edwards & Haime 1848
82. Heterodontus Blainville 1816
83. Heteromycteris Kaup 1858
84. Heteronema Dujardin 1841
85. Heteronucia Alcock 1896
86. Heteropelma Wesmael 1849
87. Heterophyes Cobbold 1866
88. Heteroplopomus Tomiyama 1936
89. Heteropriapulus Kritsky 2007
90. Heteropsammia Milne-Edwards & Haime 1848
91. Heterozaptyx Pilsbry 1906
92. Heterozonias Fisher 1910
93. Hexacentrus Serville 1831
94. Hexagenia Walsh 1863
95. Hexagrammos Tilesius 1810
96. Hexametra Travassos 1919
97. Hexamita Dujardin 1838
98. Hexechamaesipho Poltarukha 1996
99. Hiatella Bosc 1801
100. Hibiscus Linné
101. Hildenbrandia Nardo 1834
102. Hime Starks 1924
103. Hinomoto Hoshina 2002
104. Hippichthys Bleeker 1849
105. Hippocampus Rafinesque 1810
106. Hippoglossoides Gottsche 1835
107. Hiroa Ross & Newman 1973
108. Hirtodrosophila Duda 1923
109. Hispanirhynchia Thomson 1927
110. Histiopterus Temminck & Schlegel 1844
111. Histrio Fischer 1813
112. Hokkaidocephala Tenora, Gulyaev & Kamiya 1999
113. Hololepidella Willey 1905
114. Homo Linnaeus 1758
115. Homotechnes Candèze 1882
116. Hoplichthys G. Cuvier 1829
117. Hoplobrotula Gill 1863
118. Hormiphora L. Agassiz 1860
119. Hormomya Mörch 1853
120. Horornis Hodgson 1845
121. Hucho Günther 1866
122. Huso J.F. Brandt & Ratzeburg 1833
123. Hyale Rathke 1837
124. Hyalella S.I. Smith 1874
125. Hybomys Thomas 1910
126. Hydaticus Leach 1817
127. Hydatophylax Wallengren 1891
128. Hydnobius Schmidt 1841
129. Hydnophora Fischer von Waldheim 1807
130. Hydrangea Linné
131. Hydrilla L.C. Richard
132. Hydrodictyon Roth 1797
133. Hydroglyphus Motschulsky 1853
134. Hydroides Gunnerus 1768
135. Hydrometra Latreille 1796
136. Hydrophilus Geoffroy 1762
137. Hygrosoma Mortensen 1903
138. Hyla Laurenti 1768
139. Hylomyscus Thomas 1926
140. Hymeniacidon Bowerbank 1858
141. Hymenolepis Weinland 1858
142. Hymenopenaeus Smith 1882
143. Hynobius Tschudi 1838
144. Hyostrongylus Hall 1921
145. Hyotissa Stenzel 1971
146. Hypodytes Gistel 1848
147. Hyperoglyphe Günther 1859
148. Hypherpes Chaudoir 1838
149. Hyphydrus Illiger 1802
150. Hypnum Hedwig 1801
151. Hypoatherina Schultz 1948
152. Hypodytes Gistel 1848
153. Hypomesus T.N. Gill 1862
154. Hypophthalmichthys Bleeker 1860
155. Hypoponera Santschi 1938
156. Hyporhamphus Gill 1860
157. Hyporthodus Gill 1861
158. Hypothalassia Gistel 1848
159. Hypsicomus Grube 1870
160. Hypsipetes Vigors 1831