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) [XC369060]
by Peter Boesman from Mysore-Ooty Rooad, The Nilgiris County, Tamil Nadu, India (call, long call)
Grey-bellied Cuckoo (Cacomantis passerinus) [XC260587]
by HARISHCHANDRA MHATRE from Pale-Velsao,Goa, India (call, song, 2nd call, start up call)
Subspecies
Considered by some authors to be a subspecies of Plaintive Cuckoo (Cacomantis merulinus).