The International Ornithological Committee (IOC) recognizes these 156 species of cuckoos in the family Cuculidae. In addition to the 91 species whose name includes "cuckoo", the family includes anis, roadrunners, coucals, couas, malkohas, and koels. They are distributed among 35 genera, some of which have only one species. Two extinct species (E), the snail-eating coua and the St. Helena cuckoo, are included.
This list is presented according to the IOC taxonomic sequence and can also be sorted alphabetically by common name and binomial.