The Chestnut-bellied Malkoha (Phaenicophaeus sumatranus) is a species of cuckoo in the Cuculidae family. It is found in Brunei, Indonesia, Malaysia, Myanmar, Singapore, and Thailand. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical mangrove forests, and subtropical or tropical swamps. It is threatened by habitat loss.
It is a rare breeding resident in Singapore.
It inhabits forests, such as the Central Catchment and the Western Catchment.