Marumba quercus, the oak hawk-moth, is a moth of the family Sphingidae. The species was first described by Michael Denis and Ignaz Schiffermüller in 1775.
It is found in southern Europe, North Africa, the Near East and Mesopotamia.
The wingspan is 85–125 mm. The female is slightly larger than the male.
The larvae feed on oak species, primarily species with dry leaves such as cork oak and holm oak.