Between brackets is the number of accepted extant species
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- Decapoda (17 683)
- Suborder Decapoda incertae sedis †
- Suborder Dendrobranchiata (533)
- Suborder Euzygida accepted as Stenopodidea
- Suborder Heterochelida
- Suborder Macrura
- Suborder Macrura reptantia
- Suborder Natantia
- Suborder Pleocyemata (17 150)
- Infraorder Achelata (153)
- Infraorder Anomura (3 414)
- Infraorder Astacidea (783)
- Infraorder Axiidea (600)
- Infraorder Brachyura (7 883)
- Section Callichimaeroida †
- Section Cyclodorippoida (110)
- Section Dakoticancroida †
- Section Dromiacea (189)
- Section Etyoida †
- Section Eubrachyura (7 446)
- Section Homoloida (91)
- Subsection Homolidea accepted as Homolidae De Haan, 1839
- Subsection Latreillidea accepted as Latreilliidae Stimpson, 1858
- Superfamily Homoloidea De Haan, 1839 (91)
- Family Homolidae De Haan, 1839 (83)
- Tribe Latreillopsini Števčić, 2011 accepted as Homolidae De Haan, 1839
- Genus Antarctomithrax Feldmann, 1994 †
- Genus Ariecornibus Franţescu, 2014 †
- Genus Cherpihomola Marangon & De Angeli, 2020 †
- Genus Cretalamoha Nyborg & Garassino, 2017 † accepted as Cretalamoha Nyborg, Garassino & Vega, 2023 †
- Genus Cretalamoha Nyborg, Garassino & Vega, 2023 †
- Genus Dagnaudus Guinot & Richer de Forges, 1995 (1)
- Genus Doerflesia Feldmann & Schweitzer, 2009 †
- Genus Eohomola Collins & Rasmussen, 1992 † accepted as Latheticocarcinus Bishop, 1988 †
- Genus Gordonopsis Guinot & Richer de Forges, 1995 (9)
- Genus Homola Leach, 1815 (12)
- Genus Homolax Alcock, 1899 (1)
- Genus Homolochunia Chun, 1903 (4)
- Genus Homologenus A. Milne-Edwards in Henderson, 1888 (13)
- Genus Homolomannia Ihle, 1912 (2)
- Genus Homolopsis A. Milne-Edwards, 1880 accepted as Homologenus A. Milne-Edwards in Henderson, 1888
- Genus Homolopsis Bell, 1863 †
- Genus Hoplitocarcinus Beurlen, 1928 †
- Genus Hypsophrys Wood-Mason in Wood-Mason & Alcock, 1891 accepted as Lamoha Ng, 1998
- Genus Hypsophrys Anonymous, 1891 accepted as Hypsophrys Wood-Mason in Wood-Mason & Alcock, 1891
- Genus Ihlopsis Guinot & Richer de Forges, 1995 (3)
- Genus Lamoha Ng, 1998 (10)
- Genus Latheticocarcinus Bishop, 1988 †
- Genus Latreillopsis Henderson, 1888 (10)
- Genus Lignihomola Collins, 1997 †
- Genus Lindahomola Garassino, Weaver, Portell & Vega, 2019 †
- Genus Londinimola Collins & Saward, 2006 †
- Genus Metahomola Collins & Rasmussen, 1992 † accepted as Latheticocarcinus Bishop, 1988 †
- Genus Moloha Barnard, 1947 (7)
- Genus Navarrahomola Artal, Van Bakel, Fraaije, Jagt & Klompmaker, 2012 †
- Genus Nogarhomola De Angeli & Alberti, 2012 †
- Genus Palehomola Rathbun, 1926 †
- Genus Parhomola Wood-Mason in Wood-Mason & Alcock, 1891 accepted as Paromola Wood-Mason in Wood-Mason & Alcock, 1891
- Genus Paromola Wood-Mason in Wood-Mason & Alcock, 1891 (6)
- Genus Paromolopsis Wood-Mason in Wood-Mason & Alcock, 1891 (1)
- Genus Paromolopsis Anonymous, 1891 accepted as Paromolopsis Wood-Mason in Wood-Mason & Alcock, 1891
- Genus Peedeehomola Garassino, Clements & Vega, 2015 †
- Genus Prohomola Karasawa, 1992 †
- Species Prohomola japonica (Yokoyama, 1911) †
- Species Prohomola katunai Blow & Manning, 1996 †
- Genus Thelxiope Rafinesque, 1814 accepted as Homola Leach, 1815
- Genus Yaldwynopsis Guinot & Richer de Forges, 1995 (4)
- Genus Zygastrocarcinus Bishop, 1983 †
- Family Latreilliidae Stimpson, 1858 (7)
- Family Mithracitidae Števčić, 2005 †
- Family Poupiniidae Guinot, 1991 (1)
- Family Thelxiopeidae De Haan, 1839 accepted as Homolidae De Haan, 1839
- Family Tithonohomolidae Feldmann & Schweitzer, 2009 †
- Section Podotremata accepted as Brachyura
- Section Raninoida (47)
- Section Torynommoida †
- Family Brachyura incertae sedis
- Family Cretapsaridae Luque in Luque, Xing, Briggs, Clark, Duque, Hui, Mai & McKellar, 2021 †
- Family Montemagrechiridae Klompmaker, Portell & van der Meij, 2016 †
- Genus Psammograpsus A. Milne-Edwards, 1860 †
- Genus Zoea Bosc, 1801
- Infraorder Callianassidea accepted as Axiidea
- Infraorder Caridea (3 919)
- Infraorder Gebiidea (252)
- Infraorder Glypheidea (2)
- Infraorder Palaeopalaeomonida †
- Infraorder Polychelida (38)
- Infraorder Procarididea (6)
- Infraorder Stenopodidea (100)
- Suborder Reptantia
- Suborder Trichelida