The hook-billed bulbul is a species of songbird in the bulbul family, Pycnonotidae. It is found in eastern Sumatra and Borneo, where its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical swamps. It is threatened by habitat loss. Alternate names for the hook-billed bulbul include the long hook-billed bulbul and long-billed bulbul.