Macroglossum passalus, the black-based hummingbird hawkmoth, is a moth of the family Sphingidae described by Dru Drury in 1773. It is known from Sri Lanka, India, Thailand, south-eastern China, Taiwan, southern Japan, Indonesia (Sumatra, Java) and the Philippines.

The wingspan is 52–62 mm. Adults are attracted to the flowers of Duranta erecta and Lantana camara. They are on wing at dawn and dusk.

Larvae have been recorded feeding on Daphniphyllum calycinum in Hong Kong, Photinia glabra in Japan and Photinia lindleyana in India.

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