Chironex is a genus of box jellyfish in the family Chirodropidae.

Their stings are highly venomous, and have caused human fatalities.

Based on present knowledge, the genus is restricted to the central Indo-Pacific, ranging from southern Japan to northern Australia.

[1][2] The World Register of Marine Species lists the following species:[3]

This subphylum Medusozoa-related article is a stub.