Opisthacanthus is a genus of scorpions in the family Hormuridae occurring in Central and South America, the Caribbean, Africa and Madagascar.

[1] The following species are recognised in the genus Opisthacanthus:[2] Subgenus Opisthacanthus Peters, 1861 I. cayaporum group II.

lecomtei group Subgenus Nepabellus Francke, 1974 I. africanus group II.

asper group III.

This scorpion-related article is a stub.