Arachnida Cuvier, 1812
Afghanorthochirus Lourenco & Vachon, 1997
Afroisometrus Kovarik, 1997
Allobuthiscorpius Kjellesvig-Waering, 1986
Allobuthus Kjellesvig-Waering, 1986
Andibothriurus Bücherl, 1964
Anthracoscorpio Kusta, 1889
Apiscorpio Kjellesvig-Waering, 1986
Araripescorpius Bouret Campos, 1986
Archaeobuthus Lourenco, 2001
Archaeomartus Stormer, 1970
Aspiscorpio Kjellesvig-Waering, 1986
Auyantepuia Gonzalez-Sponga, 1978
Balfourianus Vachon, 1979
Baloorthochirus Kovarik, 1996
Benniescorpio Wills, 1960
Bothriuridae Simon, 1880
Buthidae C. L. Koch, 1837
Buthiscorpius Petrunkevitch, 1953
Cayooca Gonzalez-Sponga, 1996
Chactidae Pocock, 1893
Chaerilidae Pocock, 1893
Compsoscorpius Petrunkevitch, 1949
Congobuthus Lourenco, 1999
Corniops Jeram, 1994
Coseleyscorpio Kjellesvig-Waering, 1986
Cosleyscorpio Kjellesvig-Waering, 1986
Cryptoscorpius Jeram, 1994
Deccanobuthus Lourenco, 2000
Diplocentridae Karsch, 1880
Egyptobuthus Lourenco, 1999
Eobuthus Fritsch, 1904
Eoscorpiidae
Euscorpiidae Laurie, 1896
Gallioscorpio Lourenco & Gall, 2004
Gigantoloides Lourenco, 2002
Guyanochactas Lourenco, 1998
Gymnoscorpius Jeram, 1994
Heloscorpio Kjellesvig-Waering, 1986
Heteroscorpionidae Kraepelin, 1905
Himalayotityobuthus Lourenco, 1997
Hubeiscorpio Walossek, Li & Brauckmann, 1990
Iranobuthus Kovarik, 1997
Ischnuridae Simon, 1897
Isobuthus Fritsch, 1904
Iuridae Thorell, 1876
Javanimetrus Couzijn, 1981
Kronoscorpio Kjellesvig-Waering, 1986
Lanzatus Kovarik, 2001
Latigenes Maury, 1975
Leptosternus Maury, 1973
Lichnoscorpius Petrunkevitch, 1949
Liochelidae
Lychasioides Vachon, 1974
Mazoniscorpio Wills, 1960
Mesophonus Wills, 1910
Microananteris Lourenco, 2003
Microcharmidae Lourenço, 1996
Microcharmus Lourenco, 1995
Microsternus Maury, 1973
Ministernus Francke, 1985
Monodopisthacanthus Lourenco, 2001
Neochactas Soleglad & Fet, 2003
Neogrosphus Lourenco, 1995
Neohemibuthus Lourenco, 1996
Neoprotobuthus Lourenco, 2000
Nepabellus Francke, 1974
Opisthocentrus Pocock, 1893
Opseiobuthus Kjellesvig-Waering, 1986
Pakistanorthochirus Lourenco, 1997
Palaeoakentrobuthus Lourenco & Weitschat, 2000
Palaeoananteris Lourenco & Weitschat, 2001
Palaeoburmesebuthus Lourenco, 2002
Palaeocheloctonus Lourenco, 1996
Palaeoeuscorpius Lourenco, 2003
Palaeogrosphus Lourenco, 2000
Palaeolychas Lourenco & Weitschat, 1996
Palaeoprotobuthus Lourenco & Weitschat, 2000
Palaeotityobuthus Lourenco & Weitschat, 2000
Pandinoides Vachon, 1974
Pandinopsis Vachon, 1974
Pandinurus Vachon, 1974
Parabroteas Penther, 1913
Paraisobuthus Kjellesvig-Waering, 1986
Paraorthochirus Lourenco & Vachon, 1995
Pareobuthus Wills, 1959
Pareuscorpius Vachon, 1961
Parvabsonus de Armas, 1974
Pectinibuthus Fet, 1987
Pentheria Francke, 1985
Phassus Thorell, 1876
Phoxiscorpio Kjellesvig-Waering, 1986
Protobuthus Lourenco & Gall, 2004
Protoischnurus de Carvalho & Lourenco, 2001
Protophthalmus Lawrence, 1969
Pseudochactidae Gromov, 1998
Pseudolissothus Lourenco, 2001
Pseudouroplectes Lourenco, 1995
Pucha Francke, 1985
Pulmonoscorpius Jeram, 1994
Reddyanus Vachon, 1972
Sabinebuthus Lourenco, 2001
Scoloposcorpio Kjellesvig-Waering, 1986
Scorpionidae Latreille, 1802
Scorpiopidae Kraepelin, 1905
Scorpiopsidae
Somalibuthus Kovarik, 1998
Somalicharmus Kovarik, 1998
Srilankametrus Couzijn, 1981
Superstitionidae
Superstitioniidae Stahnke, 1940
Taurepania Gonzalez-Sponga, 1978
Telmatoscorpio Kjellesvig-Waering, 1986
Thaicharmus Kovarik, 1995
Troglotayosicidae Lourenço, 1998
Troglotityobuthus Lourenco, 2000
Urodacidae
Uroplectoides Lourenco, 1998
Vaejovidae Thorell, 1876