Bangladesh (B), Bhutan (B), India (B), Maldives, Myanmar, Nepal (B), Pakistan (B), Sri Lanka.
Vagrant to Oman.
Himalayas of northern Pakistan and northern India east to Nepal, Sikkim, Bhutan and possibly Assam, and south through peninsular India to Nilgiris and Wynad (Kerala); winters south to Sri Lanka and Maldive Is.
 
Population
Estimated population is unknown (2010).
Grey-bellied Cuckoo (Cacomantis passerinus) [XC181937]
by Mandar Bhagat from Khosala, Bhutan (song)
Grey-bellied Cuckoo (Cacomantis passerinus) [XC722892]
by Lakshmi Ravishankar from Dapada, Dadra and Nagar Haveli, Dadra and Nagar Haveli and Daman and Diu, India (song)
Subspecies
Considered by some authors to be a subspecies of Plaintive Cuckoo (Cacomantis merulinus).