The Dark-billed Cuckoo (Coccyzus melacoryphus) is a species of bird in the Cuculidae family, the cuckoos.

It is found in Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Peru, Suriname, Trinidad and Tobago, Uruguay and Venezuela. It has occurred as a vagrant in northern Chile, the Falkland Islands and Grenada.

Its natural habitats are subtropical or tropical dry forests, subtropical or tropical moist lowland forests, and heavily degraded former forest.