| Tockus ruahae | Calao de Tanzanie | Tanzanian Red-billed Hornbill |
| Tockus kempi | Calao occidental | Western Red-billed Hornbill |
| Tockus damarensis | Calao de Damara | Damara Red-billed Hornbill |
| Tockus rufirostris | Calao d'Afrique du Sud | Southern Red-billed Hornbill |
| Tockus erythrorhynchus | Calao à bec rouge | Northern Red-billed Hornbill |
| Tockus monteiri | Calao de Monteiro | Monteiro's Hornbill |
| Tockus deckeni | Calao de Decken | Von der Decken's Hornbill |
| Tockus jacksoni | Calao de Jackson | Jackson's Hornbill |
| Tockus leucomelas | Calao leucomèle | Southern Yellow-billed Hornbill |
| Tockus flavirostris | Calao à bec jaune | Eastern Yellow-billed Hornbill |
| Lophoceros bradfieldi | Calao de Bradfield | Bradfield's Hornbill |
| Lophoceros alboterminatus | Calao couronné | Crowned Hornbill |
| Lophoceros semifasciatus | Calao brévibande | West African Pied Hornbill |
| Lophoceros fasciatus | Calao longibande | Congo Pied Hornbill |
| Lophoceros hemprichii | Calao de Hemprich | Hemprich's Hornbill |
| Lophoceros nasutus | Calao à bec noir | African Grey Hornbill |
| Lophoceros camurus | Calao pygmée | Red-billed Dwarf Hornbill |
| Lophoceros pallidirostris | Calao à bec pâle | Pale-billed Hornbill |
| Bycanistes fistulator | Calao siffleur | Piping Hornbill |
| Bycanistes bucinator | Calao trompette | Trumpeter Hornbill |
| Bycanistes cylindricus | Calao à joues brunes | Brown-cheeked Hornbill |
| Bycanistes albotibialis | Calao à cuisses blanches | White-thighed Hornbill |
| Bycanistes subcylindricus | Calao à joues grises | Black-and-white-casqued Hornbill |
| Bycanistes brevis | Calao à joues argent | Silvery-cheeked Hornbill |
| Ceratogymna atrata | Calao à casque noir | Black-casqued Hornbill |
| Ceratogymna elata | Calao à casque jaune | Yellow-casqued Hornbill |
| Horizocerus hartlaubi | Calao de Hartlaub | Western Dwarf Hornbill |
| Horizocerus granti | Calao de Grant | Eastern Dwarf Hornbill |
| Horizocerus albocristatus | Calao à huppe blanche | Western Long-tailed Hornbill |
| Horizocerus cassini | Calao de Cassin | Eastern Long-tailed Hornbill |
| Berenicornis comatus | Calao coiffé | White-crowned Hornbill |
| Buceros rhinoceros | Calao rhinocéros | Rhinoceros Hornbill |
| Buceros bicornis | Calao bicorne | Great Hornbill |
| Buceros hydrocorax | Calao à casque plat | Rufous Hornbill |
| Rhinoplax vigil | Calao à casque rond | Helmeted Hornbill |
| Anthracoceros marchei | Calao de Palawan | Palawan Hornbill |
| Anthracoceros albirostris | Calao pie | Oriental Pied Hornbill |
| Anthracoceros coronatus | Calao de Malabar | Malabar Pied Hornbill |
| Anthracoceros montani | Calao des Sulu | Sulu Hornbill |
| Anthracoceros malayanus | Calao charbonnier | Black Hornbill |
| Ocyceros griseus | Calao gris | Malabar Grey Hornbill |
| Ocyceros gingalensis | Calao de Ceylan | Sri Lanka Grey Hornbill |
| Ocyceros birostris | Calao de Gingi | Indian Grey Hornbill |
| Anorrhinus tickelli | Calao brun | Tickell's Brown Hornbill |
| Anorrhinus austeni | Calao d'Austen | Austen's Brown Hornbill |
| Anorrhinus galeritus | Calao largup | Bushy-crested Hornbill |
| Aceros nipalensis | Calao à cou roux | Rufous-necked Hornbill |
| Rhyticeros plicatus | Calao papou | Blyth's Hornbill |
| Rhyticeros narcondami | Calao de Narcondam | Narcondam Hornbill |
| Rhyticeros undulatus | Calao festonné | Wreathed Hornbill |
| Rhyticeros everetti | Calao de Sumba | Sumba Hornbill |
| Rhyticeros subruficollis | Calao à gorge claire | Plain-pouched Hornbill |
| Rhyticeros cassidix | Calao à cimier | Knobbed Hornbill |
| Rhabdotorrhinus waldeni | Calao de Walden | Walden's Hornbill |
| Rhabdotorrhinus leucocephalus | Calao de Vieillot | Writhed Hornbill |
| Rhabdotorrhinus exarhatus | Calao des Célèbes | Sulawesi Hornbill |
| Rhabdotorrhinus corrugatus | Calao à casque rouge | Wrinkled Hornbill |
| Penelopides manillae | Calao de Manille | Luzon Hornbill |
| Penelopides mindorensis | Calao de Mindoro | Mindoro Hornbill |
| Penelopides affinis | Calao de Mindanao | Mindanao Hornbill |
| Penelopides samarensis | Calao de Samar | Samar Hornbill |
| Penelopides panini | Calao tarictic | Visayan Hornbill |
