The Atlas moth (Attacus atlas) is a large saturniid moth found in the tropical and subtropical forests of Southeast Asia, and is common across the Malay archipelago.

Atlas moths were often considered the largest moths in the world in terms of total wing surface area, but recent sources confer this title upon the Hercules Moth from New Guinea and northern Australia. Their wingspans are also amongst the largest, reaching over 25 cm (9.8 in). Females are appreciably larger and heavier than the males.