Hab
- Haberma
Had
- Hadromastacidae
- Hadromastax
- Hadropenaeus
- Hadroplax
- Hadziidae
Hae
- Haemobaphes
- Haemocinus
Hai
- Haifameira
Haigiopagurus McLaughlin, 2005
- Haigiopagurus diegensis (Scanland & Hopkins, 1969)
Crustacea → Malacostraca → Decapoda → Paguroidea → Paguridae
- Hainanius
- Hainanpotamon
Hal
Halacarsantia Wolff, 1989
- Halacarsantia acuta Shimomura & Bruce, 2012
- Halacarsantia colombiensis Wolff & Brandt, 2000
- Halacarsantia justi Wolff, 1989
- Halacarsantia kussakini Mueller, 1992
- Halacarsantia ovata Shimomura & Ariyama, 2004
- Halacarsantia setosa Shimomura & Ariyama, 2004
- Halacarsantia suarezmoralesi Ortiz, Schotte & Winfield, 2015
- Halacarsantia uniramea (Menzies & Miller, 1955)
Crustacea → Malacostraca → Isopoda → Asellota → Janiroidea → Santiidae
- Halectinosoma
- Haledromia
- Halemysis
- Haliana
- Halicarcinides
- Halicarcinus
- Halice
- Halicella
- Halicoides
- Halicreion
- Halicyclops
- Halimede
- Halimena
- Haliophasma
- Haliporoides
- Haliporus
- Halirages
- Haliragoides
- Halmyrapseudes
- Haloa
- Halocaridina
- Halocypria
- Halocyprida
- Halocyprida
- Halocyprididae
- Halocyprididae
- Halocypridoidea
- Halocypridoidea
- Halocypris
- Haloniscus
- Halophiloscia
- Halophilosciidae
- Halophytophilus
- Haloptilus
- Halosbaena
- Halosbaenidae
- Haloschizopera
Ham
- Hamatipeda
- Hamatoscalpellum
- Hamiger
- Hamodactyloides
- Hamodactylus
- Hamopontonia
- Hampsonellus
Han
- Hanoniscus
- Hansenium
- Hansenolana
- Hansenomysis
- Hansenulus
Hap
Hapalocarcinus Stimpson, 1859
- Hapalocarcinus marsupialis Stimpson, 1859
Crustacea → Malacostraca → Decapoda → Thoracotremata → Cryptochiroidea → Cryptochiridae
- Hapalogaster
- Hapalonotus
- Haplarmadillo
- Haplocheira
- Haplocope
- Haplocytheridea
- Haplodendron
- Haplomesus
- Haplomunna
- Haplomunnidae
- Haploniscidae
- Haploniscus
- Haploops
- Haplophthalmus
- Haplopodia
- Haplosaccus
- Haplostoma
- Haplostomella
- Haplostomides
- Haplostylus
- Hapsidohedra
Haptolana Bowman, 1966
- Haptolana belizana Botosanenau & Iliffe, 1997
- Haptolana bowmani Botosaneanu & Iliffe, 1997
- Haptolana pholeta Bruce & Humphreys, 1993
- Haptolana somala Messana & Chelazzi, 1984
- Haptolana trichostoma Bowman, 1966
- Haptolana yarraloola Bruce, 2008
Crustacea → Malacostraca → Isopoda → Cymothooidea → Cirolanidae
- Haptosquilla
Har
- Harbansus
- Harcledo
- Hardametopa
- Hargeria
- Harmelinella
- Harpacticella
- Harpacticidae
- Harpacticidae
- Harpacticoida
- Harpacticoida
- Harpacticus
- Harpagocythere
- Harpiliopsis
- Harpilius
- Harpinia
- Harpiniopsis
Harpiosquilla Holthuis, 1964
- Harpiosquilla annandalei (Kemp, 1911)
- Harpiosquilla harpax (de Haan, 1844)
- Harpiosquilla indica Manning, 1969
- Harpiosquilla japonica Manning, 1969
- Harpiosquilla melanoura Manning, 1968
- Harpiosquilla raphidea (Fabricius, 1798)
- Harpiosquilla sinensis Liu & Wang, 1998
- Harpiosquilla stephensoni Manning, 1969
Crustacea → Malacostraca → Stomatopoda → Squilloidea → Squillidae
Harrieta Kensley, 1987
- Harrieta faxoni (Richardson, 1905)
Crustacea → Malacostraca → Isopoda → Sphaeromatoidea → Sphaeromatidae
- Harrietella
- Harrietonana
- Harrovia
- Hartmanodes
- Hartocythere
Has
- Hastigerella
Haswellia Miers, 1884
- Haswellia anomala (Haswell, 1881)
- Haswellia carnea (Haswell, 1881)
- Haswellia cilicoides Baker, 1908
- Haswellia emarginata (Haswell, 1882)
- Haswellia glauerti Baker, 1929
- Haswellia intermedia Baker, 1926
- Haswellia juxtacarnea Baker, 1926
Crustacea → Malacostraca → Isopoda → Sphaeromatoidea → Sphaeromatidae
Hat
- Hatschekia
- Hatschekiidae
- Hatschekiidae
Hau
- Haustoriidae
- Haustorioides
- Haustorius
Haw
- Hawaianira
- Hawaiioscia
- Hawaiodillo
- Hawaiorchestia