Chrysis viridula is a Western Palearctic species of cuckoo wasp, first described by Carl Linnaeus in 1761.

It is a parasitoid of a number of species of eumenid wasp, mainly those in the genus Odynerus.

It is found throughout southern England and the Channel Islands, and north to northeast Yorkshire.

It is also found in many parts of mainland Europe (Norway, Sweden, Finland, Denmark, The Netherlands, Belgium, France, Spain, Germany, Italy, Poland, Hungary and Romania) and extending eastwards to the Caucasus, and southwards to North Africa.

It is normally found in the vicinity of the host wasps' nest tunnels on hard banks of sand, earth or clay, and once on the wall of a church.