Zicrona caerulea, the blue shieldbug, is a species of bug of the family Pentatomidae.

Zicrona caerulea can reach an adult size of about 5–8 millimetres (0.20–0.31 in).

The body is uniformly metallic blue-green (hence the Latin name caerulea, meaning blue).

New adults of this univoltine species can be found from July onwards.

Its natural habitat consists of low vegetation in moors, heaths, damp grassland and forest edges.