Acosmeryx naga is a moth of the Sphingidae family. It was described by Moore in 1858, and is known from Japan, Tajikistan, Afghanistan, China and south-east Asia. The wingspan is 86-112mm. In northern China, there is one generation per year, with adults on wing from April to June. In Korea, adults are on wing from early May to mid August. The larva of the species have been found on plants in the genera Vitis, Ampelopsis, Actinidia, and Saurauia.