Theretra clotho, the common hunter hawkmoth, is a moth of the family Sphingidae.

It is found from Sri Lanka, India (including the Andaman Islands), Nepal and Myanmar, east through China to Taiwan, South Korea and Japan, and then south-east through South East Asia as far as the Lesser Sunda Islands and Timor in Indonesia.

In general though, adults are on wing from April or May to October throughout the southern range.

Larvae have been recorded feeding on Amorphophallus, Hibiscus, Parthenocissus, Saurauia and Vitis in Guangdong and Hong Kong.

Elsewhere, other major host plant families include Actinidiaceae, Araceae, Begoniaceae, Dilleniaceae, Leeaceae, Malvaceae, Onagraceae, Urticaceae and Vitaceae.