| Suborder | Chaerilida
Kraepelin, 1894
| 1
6
73 | Family
Genera
Species |
| Suborder | Neoscorpionina
Thorell & Lindström, 1885
| 27
505
4841 | Families
Genera
Species |
| Superfamily | Bothriuroidea
Simon, 1880
| 0
0
0 | Families
Genera
Species |
| Superfamily | Caraboctonoidea
Kraepelin, 1905
| 2
10
49 | Families
Genera
Species |
| Superfamily | Hadruroidea
Stahnke, 1974
| 1
2
20 | Family
Genera
Species |
| Superfamily | Iuroidea
Thorell, 1876
| 0
0
0 | Families
Genera
Species |
| Superfamily | Palaeobuthoidea ♰
Kjellesvig-Waering, 1986
| 1
4
3 | Family
Genera
Species |
| Superfamily | Pseudochactoidea
Gromov, 1998
| 1
7
14 | Family
Genera
Species |
| Family | Acanthoscopioniidae ♰
accepted as Acanthoscorpionidae Kjellesvig-Waering, 1986 ⇒ Acanthoscorpionidae
| 0
0 | Genera
Species |
| Family | Acanthoscorpionidae ♰
Kjellesvig-Waering, 1986
| 2
1 | Genera
Species |
| Family | Allobuthiscorpiidae ♰
Kjellesvig-Waering, 1986
| 1
1 | Genus
Species |
| Family | Allopalaeophonidae ♰
Kjellesvig-Waering, 1986
| 1
1 | Genus
Species |
| Family | Anthracochaerilidae ♰
Kjellesvig-Waering, 1986
| 0
0 | Genera
Species |
| Family | Anthracoscorpionidae ♰
Fritsch, 1904
| 0
0 | Genera
Species |
| Family | Archaeoctonidae ♰
Petrunkevitch, 1949 ⇒ Proscorpiidae
| 2
3 | Genera
Species |
| Family | Branchioscorpionidae ♰
Kjellesvig-Waering, 1986
| 1
1 | Genus
Species |
| Family | Buthiscorpiidae ♰
Kjellesvig-Waering, 1986
| 0
0 | Genera
Species |
| Family | Centromachidae ♰
Petrunkevitch, 1953
| 6
6 | Genera
Species |
| Family | Chaerilobuthidae ♰
Lourenço & Beigel, 2011
| 1
11 | Genus
Species |
| Family | Cyclophthalmidae ♰
Thorell & Lindström, 1885
| 1
7 | Genus
Species |
| Family | Dolichophonidae ♰
Petrunkevitch, 1953
| 1
1 | Genus
Species |
| Family | Eobuthidae ♰
Kjellesvig-Waering, 1986
| 1
4 | Genus
Species |
| Family | Eoctonidae ♰
Kjellesvig-Waering, 1986
| 0
0 | Genera
Species |
| Family | Eoscorpiidae ♰
Scudder, 1884
| 9
30 | Genera
Species |
| Family | Gallioscorpionidae ♰
Lourenço & Gall, 2004
| 1
1 | Genus
Species |
| Family | Garnettiidae ♰
Dubinin, 1962
| 1
1 | Genus
Species |
| Family | Gigantoscorpionidae ♰
Kjellesvig-Waering, 1986
| 2
2 | Genera
Species |
| Family | Heloscorpionidae ♰
Kjellesvig-Waering, 1986
| 1
1 | Genus
Species |
| Family | Hydroscorpiidae ♰
Kjellesvig-Waering, 1986 ⇒ Proscorpiidae
| 0
0 | Genera
Species |
| Family | Isobuthidae ♰
Petrunkevitch, 1913
| 5
10 | Genera
Species |
| Family | Kronoscorpionidae ♰
Kjellesvig-Waering, 1986
| 1
1 | Genus
Species |
| Family | Labriscorpionidae ♰
Kjellesvig-Waering, 1986 ⇒ Proscorpiidae
| 1
1 | Genus
Species |
| Family | Liassoscorpionididae ♰
Kjellesvig-Waering, 1986
| 1
0 | Genus
Species |
| Family | Loboarchaeoctonidae ♰
Kjellesvig-Waering, 1986
| 1
1 | Genus
Species |
| Family | Mazoniidae ♰
Petrunkevitch, 1913
| 1
4 | Genus
Species |
| Family | Mesophonidae ♰
Wills, 1910
| 1
10 | Genus
Species |
| Family | Microcharmidae
Lourenço, 1996 ⇒ Buthidae
| 1
0 | Genus
Species |
| Family | Microlabiidae ♰
Kjellesvig-Waering, 1986
| 1
1 | Genus
Species |
| Family | Opsieobuthidae ♰
Kjellesvig-Waering, 1986 ⇒ Centromachidae
| 1
2 | Genus
Species |
| Family | Palaeophonidae ♰
Thorell & Lindström, 1885
| 2
7 | Genera
Species |
| Family | Palaeopisthacanthidae ♰
Kjellesvig-Waering, 1986
| 1
1 | Genus
Species |
| Family | Palaeoscorpiidae ♰
Lehmann, 1944
| 1
1 | Genus
Species |
| Family | Palaeotrilineatidae ♰
Lourenço, 2012
| 1
1 | Genus
Species |
| Family | Pandinidae
Thorell, 1876
| 0
0 | Genera
Species |
| Family | Paraisobuthidae ♰
Kjellesvig-Waering, 1986
| 2
5 | Genera
Species |
| Family | Pareobuthidae ♰
Kjellesvig-Waering, 1986
| 1
1 | Genus
Species |
| Family | Petaloscorpionidae ♰
Kjellesvig-Waering, 1986
| 0
0 | Genera
Species |
| Family | Phoxiscorpionidae ♰
Kjellesvig-Waering, 1986
| 0
0 | Genera
Species |
| Family | Praearcturidae ♰
Kjellesvig-Waering, 1986
| 1
1 | Genus
Species |
| Family | Proscorpiidae ♰
Scudder, 1885
| 6
7 | Genera
Species |
| Family | Protochactidae
Magnani, Stockar & Lourenço, 2022
| 1
1 | Genus
Species |
| Family | Pseudobuthiscorpiidae ♰
Kjellesvig-Waering, 1986
| 1
1 | Genus
Species |
| Family | Scoloposcorpionidae ♰
Kjellesvig-Waering, 1986
| 2
2 | Genera
Species |
| Family | Spongiophonidae ♰
Kjellesvig-Waering, 1986
| 2
1 | Genera
Species |
| Family | Stenoscorpionidae ♰
Kjellesvig-Waering, 1986
| 1
2 | Genus
Species |
| Family | Stoermeroscorpionidae ♰
Kjellesvig-Waering, 1986 ⇒ Proscorpiidae
| 1
1 | Genus
Species |
| Family | Sucinlourencoidae ♰
Rossi, 2015
| 1
1 | Genus
Species |
| Family | Telmatoscorpionidae ♰
Kjellesvig-Waering, 1986
| 2
3 | Genera
Species |
| Family | Tiphoscorpionidae ♰
Kjellesvig Waering, 1986
| 1
1 | Genus
Species |
| Family | Waeringoscorpionidae ♰
Størmer, 1970 ⇒ Proscorpiidae
| 0
0 | Genera
Species |
| Family | Waterstoniidae ♰
Kjellesvig-Waering, 1986
| 1
3 | Genus
Species |
| Family | Willsiscorpionidae ♰
Kjellesvig-Waering, 1986
| 1
1 | Genus
Species |
| Genus | Alacranichnus
Lucas, Lerner & Voigt, 2013
| 0 | Species |
| Genus | Cosleyscorpio
Edwards, Manly & Tobias, 1996
| 0 | Species |
| Genus | Dolicophonus ♰
Petrunkevitch, 1949
| 0 | Species |
| Genus | Liassiscorpionides ♰
Bode, 1951
| 0 | Species |
| Genus | Opseiobuthus ♰
Kjellesvig-Waering, 1986
| 1 | Species |
| Genus | Palaeohelcura
| 1 | Species |
| Genus | Paleomachus
Selden, 1985
| 0 | Species |
| Genus | Parioscorpio
Wendruff, Babcock, Wirkner, Kluessendorf & Mikulic, 2020
| 1 | Species |
| Genus | Permomatveevia
Dammann, 2017
| 1 | Species |
| Genus | Scoloscorpio ♰
Kjellesvig-Waering, 1986
| 0 | Species |
| Genus | Scorpius
Garsault, 1764 ⇒ Euscorpius
| 20 | Species |
