1. Family [Unassigned]
   1. Genus Udora Münster, 1839 †
   2. Genus Psammograpsus A. Milne-Edwards, 1860 † (unaccepted > nomen nudum)
   3. Genus Caricyphus Spence Bate, 1888 (uncertain > nomen dubium, Based on a larval stage of an undeterminable species of Oplophoridae or Acanthephyridae)
   4. Genus Rhomaleocaris Spence Bate, 1888 (uncertain > nomen dubium, Based on a larval form of an undeterminable species of Caridea)
   5. Genus Zoea Bosc, 1801 (uncertain > taxon inquirendum)

1. Superfamily Aegloidea Dana, 1852
2. Superfamily Aethroidea Dana, 1851
3. Superfamily Alpheoidea Rafinesque, 1815
4. Family Anacalliacidae Manning & Felder, 1991
5. Superfamily Aphanodactyloidea Ahyong & Ng, 2009
6. Superfamily Astacoidea Latreille, 1802
7. Superfamily Atyoidea De Haan, 1849
8. Family Axiidae Huxley, 1879
9. Superfamily Bellioidea Dana, 1852
10. Superfamily Bresilioidea Calman, 1896
11. Superfamily Bythograeoidea Williams, 1980
12. Superfamily Calappoidea De Haan, 1833
13. Family Callianassidae Dana, 1852
14. Family Callianideidae Kossman, 1880
15. Family Callianopsidae Manning & Felder, 1991
16. Superfamily Callichimaeroidea Luque, Feldmann, Vernygora, Schweitzer, Cameron, Kerr, Vega, Duque, Strange, Palmer & Jaramillo, 2019 †
17. Family Callichiridae Manning & Felder, 1991
18. Superfamily Campylonotoidea Sollaud, 1913
19. Family Cancrinidae Buerlen, 1930 †
20. Superfamily Cancroidea Latreille, 1802
21. Superfamily Carpilioidea Ortmann, 1893
22. Superfamily Cheiragonoidea Ortmann, 1893
23. Superfamily Chirostyloidea Ortmann, 1892
24. Superfamily Componocancroidea Feldmann, Schweitzer & Green, 2008 †
25. Superfamily Corystoidea Samouelle, 1819
26. Superfamily Crangonoidea Haworth, 1825
27. Superfamily Cryptochiroidea Paulson, 1875
28. Family Ctenochelidae Manning & Felder, 1991
29. Superfamily Cyclodorippoidea Ortmann, 1892
30. Superfamily Dairoidea Serène, 1965
31. Superfamily Dakoticancroidea Rathbun, 1917 †
32. Superfamily Dorippoidea MacLeay, 1838
33. Superfamily Dromioidea De Haan, 1833
34. Superfamily Enoplometopoidea de Saint Laurent, 1988
35. Superfamily Eocarcinoidea Withers, 1932 †
36. Superfamily Eriphioidea MacLeay, 1838
37. Superfamily Erymoidea Van Straelen, 1925 †
38. Superfamily Eryonoidea De Haan, 1841
39. Superfamily Etyoidea Guinot & Tavares, 2001 †
40. Family Eucalliacidae Manning & Felder, 1991
41. Superfamily Galatheoidea Samouelle, 1819
42. Superfamily Gastrodoroidea Van Bakel, Fraaije, Jagt & Artal, 2008 †
43. Superfamily Gecarcinucoidea Rathbun, 1904
44. Superfamily Glaessnericaroidea Karasawa, Schweitzer & Feldmann, 2013 †
45. Superfamily Glaessneropsoidea Patrulius, 1959 †
46. Superfamily Glypheoidea Winkler, 1881
47. Superfamily Goneplacoidea MacLeay, 1838
48. Superfamily Grapsoidea MacLeay, 1838
49. Superfamily Hexapodoidea Miers, 1886
50. Superfamily Hippoidea Latreille, 1825
51. Superfamily Homolodromioidea Alcock, 1900
52. Superfamily Homoloidea De Haan, 1839
53. Superfamily Hymenosomatoidea MacLeay, 1838
54. Superfamily Konidromitoidea Schweitzer & Feldmann, 2010 †
55. Family Laomediidae Borradaile, 1903
56. Superfamily Leucosioidea Samouelle, 1819
57. Superfamily Lomisoidea Bouvier, 1894
58. Family Macromaxillocarididae Alvarez, Iliffe & Villalobos, 2006
59. Superfamily Majoidea Samouelle, 1819
60. Family Micheleidae Sakai, 1992
61. Family Montemagrechiridae Klompmaker, Portell & van der Meij, 2016 †
62. Superfamily Montezumelloidea Ossó & Domínguez, 2021 †
63. Superfamily Necrocarcinoidea Förster, 1968 †
64. Superfamily Nematocarcinoidea Smith, 1884
65. Superfamily Nephropoidea Dana, 1852
66. Superfamily Ocypodoidea Rafinesque, 1815
67. Superfamily Oplophoroidea Dana, 1852
68. Superfamily Orithyioidea Dana, 1852
69. Superfamily Paguroidea Latreille, 1802
70. Superfamily Palaemonoidea Rafinesque, 1815
71. Superfamily Palaeocorystoidea Lőrenthey in Lőrenthey & Beurlen, 1929 †
72. Family Palaeopalaemonidae Brooks, 1962 †
73. Superfamily Palicoidea Bouvier, 1898
74. Family Palinuridae Latreille, 1802
75. Superfamily Pandaloidea Haworth, 1825
76. Family Paracalliacidae Sakai, 2005
77. Superfamily Parastacoidea Huxley, 1879
78. Superfamily Parthenopoidea MacLeay, 1838
79. Superfamily Pasiphaeoidea Dana, 1852
80. Superfamily Pilumnoidea Samouelle, 1819
81. Superfamily Pinnotheroidea De Haan, 1833
82. Superfamily Pleopteryxoidea Schweigert & Garassino, 2006 †
83. Superfamily Portunoidea Rafinesque, 1815
84. Superfamily Potamoidea Ortmann, 1896
85. Family Procarididae Chace & Manning, 1972
86. Superfamily Processoidea Ortmann, 1896
87. Superfamily Protastacoidea Albrecht, 1983 †
88. Superfamily Psalidopodoidea Wood-Mason
89. Superfamily Pseudocarcinoidea Ng & Davie, 2020
90. Superfamily Pseudothelphusoidea Ortmann, 1893
91. Superfamily Pseudozioidea Alcock, 1898
92. Superfamily Raninoidea De Haan, 1839
93. Superfamily Retroplumoidea Gill, 1894
94. Family Scyllaridae Latreille, 1825
95. Family Spongicolidae Schram, 1986
96. Superfamily Stenochiroidea Beurlen, 1928 †
97. Family Stenopodidae Claus, 1872
98. Family Strahlaxiidae Poore, 1994
99. Superfamily Stylodactyloidea Spence Bate, 1888
100. Family Thalassinidae Latreille, 1831
101. Superfamily Torynommoidea Glaessner, 1980 †
102. Superfamily Trapezioidea Miers, 1886
103. Superfamily Trichodactyloidea H. Milne Edwards, 1853
104. Superfamily Trichopeltarioidea Tavares & Cleva, 2010
105. Family Udorellidae Van Straelen, 1925 †
106. Family Upogebiidae Borradaile, 1903
107. Family Venipaguridae Collins, 2011 †
108. Superfamily Xanthoidea MacLeay, 1838
109. Family Axianassidae Schmitt, 1924 accepted as Laomediidae Borradaile, 1903 (unaccepted > junior subjective synonym)
110. Superfamily Birgusoidea Watabe, 2007 accepted as Paguroidea Latreille, 1802 (unjustified superfamily)
111. Family Calocarididae Ortmann, 1891 accepted as Axiidae Huxley, 1879 (unaccepted > junior subjective synonym)
112. Superfamily Cancellochelloidea Watabe, 2007 accepted as Paguroidea Latreille, 1802 (unjustified superfamily)
113. Superfamily Cheiroplatoidea Watabe, 2007 accepted as Paguroidea Latreille, 1802 (unjustified superfamily)
114. Family Eiconaxiidae Sakai & Ohta, 2005 accepted as Axiidae Huxley, 1879 (unaccepted > junior subjective synonym)
115. Family Eiconaxiopsididae Sakai, 2011 accepted as Axiidae Huxley, 1879 (junior synonyn)
116. Family Gebiadae Haworth, 1825 accepted as Upogebiidae Borradaile, 1903 (unaccepted > junior subjective synonym)
117. Family Gourretiidae Sakai, 1999 accepted as Ctenochelidae Manning & Felder, 1991 (superseded junior synonym)
118. Family Hectarthropidae Spence Bate, 1888 accepted as Processidae Ortmann, 1896
119. Superfamily Kiwaoidea Macpherson, Jones & Segonzac, 2005 accepted as Chirostyloidea Ortmann, 1892 (unaccepted > junior subjective synonym)
120. Family Kuwaitupogebiidae Sakai, Türkay & Al Aidaroos, 2015 accepted as Upogebiidae Borradaile, 1903 (unaccepted > junior subjective synonym)
121. Superfamily Lithodoidea Samouelle, 1819 accepted as Lithodidae Samouelle, 1819 (unaccepted > superseded rank)
122. Family Neoaxiidae Sakai, 2017 accepted as Axiidae Huxley, 1879 (unaccepted > junior subjective synonym)
123. Superfamily Nepropoidea Dana, 1852 accepted as Nephropoidea Dana, 1852 (unaccepted > misspelling - incorrect subsequent spelling)
124. Superfamily Palinuroidea Latreille, 1802 accepted as Achelata
125. Superfamily Physetocaridoidea Chace, 1940 accepted as Pandaloidea Haworth, 1825
126. Superfamily Pomatocheloidea Watabe, 2007 accepted as Paguroidea Latreille, 1802 (unjustified superfamily)
127. Superfamily Pylocheloidea Watabe, 2007 accepted as Paguroidea Latreille, 1802 (unjustified superfamily)
128. Superfamily Thioidea Dana, 1852 accepted as Thiidae Dana, 1852 (unaccepted > superseded rank)
129. Family Thomassiniidae de Saint Laurent, 1979 accepted as Callianideidae Kossman, 1880 (unaccepted > junior subjective synonym)
130. Family Tosacallianassidae Sakai, 2016 accepted as Ctenochelidae Manning & Felder, 1991 (unaccepted > junior subjective synonym)
131. Family Achelata incertae sedis † (temporary name)
132. Superfamily Caridea incertae sedis † (temporary name)
133. Superfamily Dromiacea incertae sedis † (temporary name)
134. Superfamily Heterotremata incertae sedis † (temporary name)
135. Family Polychelida incertae sedis † (temporary name)
136. Family Stenopodidea incertae sedis † (temporary name)
137. Family Prionorhynchus Leach, 1830 (uncertain > nomen dubium, larval form with no known adult)

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