Piesma is a genus of ash-grey leaf bugs, insects of the family Piesmatidae.

It is the type genus of the family.

[2] Piesma bugs are less than 4mm long and can be distinguished from the similar genus Parapiesma by the shape of the pronotum: the side margins have a clearly recognizable notch, which the other lacks.

[3] These insects are usually macropterous (having fully developed wings), but are sometimes brachypterous.

[4] As of 2021[update], Lygaeoidea Species File and Fossilworks accept the following species:[2][5]