| Damara Red-billed Hornbill Tockus damarensis |
| Northern Red-billed Hornbill Tockus erythrorhynchus |
| Monteiro's Hornbill Tockus monteiri |
| Von der Decken's Hornbill Tockus deckeni |
| Southern Yellow-billed Hornbill Tockus leucomelas |
| Eastern Yellow-billed Hornbill Tockus flavirostris |
| Bradfield's Hornbill Lophoceros bradfieldi |
| West African Pied Hornbill Lophoceros semifasciatus |
| Congo Pied Hornbill Lophoceros fasciatus |
| African Grey Hornbill Lophoceros nasutus |
| Red-billed Dwarf Hornbill Lophoceros camurus |
| Piping Hornbill Bycanistes fistulator |
| Trumpeter Hornbill Bycanistes bucinator |
| Brown-cheeked Hornbill Bycanistes cylindricus |
| White-thighed Hornbill Bycanistes albotibialis |
| Black-and-white-casqued Hornbill Bycanistes subcylindricus |
| Silvery-cheeked Hornbill Bycanistes brevis |
| Black-casqued Hornbill Ceratogymna atrata |
| Yellow-casqued Hornbill Ceratogymna elata |
| Western Long-tailed Hornbill Horizocerus albocristatus |
| White-crowned Hornbill Berenicornis comatus |
| Rhinoceros Hornbill Buceros rhinoceros |
| Great Hornbill Buceros bicornis |
| Rufous Hornbill Buceros hydrocorax |
| Helmeted Hornbill Rhinoplax vigil |
| Palawan Hornbill Anthracoceros marchei |
| Oriental Pied Hornbill Anthracoceros albirostris |
| Malabar Pied Hornbill Anthracoceros coronatus |
| Sulu Hornbill Anthracoceros montani |
| Black Hornbill Anthracoceros malayanus |
| Sri Lanka Grey Hornbill Ocyceros gingalensis |
| Austen's Brown Hornbill Anorrhinus austeni |
| Bushy-crested Hornbill Anorrhinus galeritus |
| Rufous-necked Hornbill Aceros nipalensis |
| Blyth's Hornbill Rhyticeros plicatus |
| Wreathed Hornbill Rhyticeros undulatus |
| Plain-pouched Hornbill Rhyticeros subruficollis |
| Knobbed Hornbill Rhyticeros cassidix |
| Wrinkled Hornbill Rhabdotorrhinus corrugatus |
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