Heterometrus cyaneus, the Asian blue forest scorpion, is a species of scorpions belonging to the family Scorpionidae.
H. cyaneus can reach a length of 12–15 cm (4.7–5.9 in). These scorpions are dark black, with blue reflections. The body is strongly granulated. This species is classified as harmful, as the sting causes moderate to severe pain, but without further consequences.
