Hormurus karschii is a species of scorpion belonging to the family Hormuridae.
Hormurus karschii can reach a length of about . Carapace is brown or dark brown, while tergites, legs, ventral surface and sternites are yellowish brown. Some specimens may be blackish brown or almost completely black.
This species is present in Australia (Queensland) and New Guinea.
These scorpions can be found in the primeval rainforest at an elevation of above sea level.