_- Bothriuridae
- Buthidae
- Caraboctonidae
- Chactidae
- Chaerilidae
- Dolichophonidae
- Eoctonidae
- Eoscorpiidae
- Euscorpiidae
- Hemiscorpiidae
- Heteroscorpionidae
- Hormuridae
- Hydroscorpiidae
- Isobuthidae
- Iuridae
- Kronoscorpionidae
- Mazoniidae
- Palaeophonidae
- Palaeopisthacanthidae
- Palaeoscorpiidae
- Proscorpiidae
- Scorpionidae
- Stoermeroscorpionidae
- Superstitioniidae
- Tiphoscorpionidae
- Vaejovidae