Eumenes dubius is a species of potter wasp in the subfamily Eumeninae of the family Vespidae.

[1] This species can be found in southern Europe and in the Near East (Spain, France, Italy, Bulgaria, Greece, Cyprus, Israel, Lebanon, Syria, Russia, Persia, Malta and Turkey).

The first metasomal segment is narrow and elongated, creating a "bulbous" appearance to the abdomen.

In males clypeus is long, with smooth and bright yellow free margin.

In the females scape is ventrally yellow, while dorsally it is orange-yellow, with a thin black line on flagellomeres 3–9.