Bangladesh, Bhutan, Cambodia, China (mainland), India, Indonesia, Laos (P), Malaysia, Myanmar, Nepal, Sri Lanka, Thailand, Vietnam (NB).
Himalayas from about Garhwal east through Nepal, Assam, Manipur, Bangladesh, south-eastern Tibet and south-central China (Sichuan, Yunnan), south to Myanmar, north-western Thailand and central Vietnam; also Andaman and Nicobar Is, but possibly only non-breeding visitor to latter. Winters south to northern Vietnam and Malay Peninsula, with apparently small numbers reaching Sumatra.
 
Population
Estimated population is unknown (2010).
Asian Emerald Cuckoo (Chrysococcyx maculatus) [XC474676]
by Sandeep Ramz from Garbhanga Forest (near Guwahati), Kamrup Metropolitan, Assam, India (song)
Asian Emerald Cuckoo (Chrysococcyx maculatus) [XC770662]
by Antero Lindholm from East Khasi Hills (near Shillong), Meghalaya, India (song)
Subspecies
Asian and Australasian forms of Chrysococcyx sometimes placed in genus Chalcites.