The Prong-billed barbet (Semnornis frantzii), is a species of barbet in the Semnornithidae family. It is native to humid highland forest in Costa Rica and western Panama. It often has been placed with the other barbets in the Capitonidae. However, DNA studies have confirmed that this arrangement is paraphyletic; New World barbets are more closely related to toucans than they are to Old World barbets. As a result, the barbet lineages are considered distinct families; the prong-billed barbet and the toucan barbet now form a separate family, Semnornithidae.