| Damara Red-billed Hornbill Tockus damarensis Link to the stamps |
| Northern Red-billed Hornbill Tockus erythrorhynchus Link to the stamps |
| Monteiro's Hornbill Tockus monteiri Link to the stamps |
| Von der Decken's Hornbill Tockus deckeni Link to the stamps |
| Southern Yellow-billed Hornbill Tockus leucomelas Link to the stamps |
| Eastern Yellow-billed Hornbill Tockus flavirostris Link to the stamps |
| Bradfield's Hornbill Lophoceros bradfieldi Link to the stamps |
| West African Pied Hornbill Lophoceros semifasciatus Link to the stamps |
| Congo Pied Hornbill Lophoceros fasciatus Link to the stamps |
| African Grey Hornbill Lophoceros nasutus Link to the stamps |
| Red-billed Dwarf Hornbill Lophoceros camurus Link to the stamps |
| Piping Hornbill Bycanistes fistulator Link to the stamps |
| Trumpeter Hornbill Bycanistes bucinator Link to the stamps |
| Brown-cheeked Hornbill Bycanistes cylindricus Link to the stamps |
| White-thighed Hornbill Bycanistes albotibialis Link to the stamps |
| Black-and-white-casqued Hornbill Bycanistes subcylindricus Link to the stamps |
| Silvery-cheeked Hornbill Bycanistes brevis Link to the stamps |
| Black-casqued Hornbill Ceratogymna atrata Link to the stamps |
| Yellow-casqued Hornbill Ceratogymna elata Link to the stamps |
| Western Long-tailed Hornbill Horizocerus albocristatus Link to the stamps |
| White-crowned Hornbill Berenicornis comatus Link to the stamps |
| Rhinoceros Hornbill Buceros rhinoceros Link to the stamps |
| Great Hornbill Buceros bicornis Link to the stamps |
| Rufous Hornbill Buceros hydrocorax Link to the stamps |
| Helmeted Hornbill Rhinoplax vigil Link to the stamps |
| Palawan Hornbill Anthracoceros marchei Link to the stamps |
| Oriental Pied Hornbill Anthracoceros albirostris |
| Burma | 16.04.1964 | Burmese birds | 1k |
| Burma | 1966 | Overprint with Burmese letters size 15 mm on 1964.01 | 1k |
| Burma | 01.07.1968 | Burmese birds Changed format | 1k |
| Burma | 01.07.1968 | Overprint with Burmese letters on 1968.01 | 1k |
| Poland | 30.10.2019 | Joint issue with Singapore Sheet | 3.30z |
| Singapore | 20.03.2002 | William Farquhar collection Sheet | * |
| Singapore | 20.03.2002 | William Farquhar collection Sheet, sa | * |
| Singapore | 20.10.2004 | Wildlife of Chek Jawa 4v set | * |
| Singapore | 20.10.2004 | Wildlife of Chek Jawa Booklet, sa | * |
| Singapore | 13.07.2013 | Our city in a garden | 50c |
| Singapore | 13.07.2013 | Our city in a garden | 5$ |
| Singapore | 13.07.2013 | Our city in a garden 2x2v sheet, sa | 50c |
| Singapore | 07.08.2015 | Singapore Botanic Gardens | 1.30$ |
| Singapore | 30.10.2019 | Joint issue with Poland | 1.30$ |
| Singapore | 30.10.2019 | Joint issue with Poland Sheet | 1.30$ |
| Vietnam | 15.04.1977 | Rare birds | 40x |
| Malabar Pied Hornbill Anthracoceros coronatus Link to the stamps |
| Sulu Hornbill Anthracoceros montani Link to the stamps |
| Black Hornbill Anthracoceros malayanus Link to the stamps |
| Sri Lanka Grey Hornbill Ocyceros gingalensis Link to the stamps |
| Austen's Brown Hornbill Anorrhinus austeni Link to the stamps |
| Bushy-crested Hornbill Anorrhinus galeritus Link to the stamps |
| Rufous-necked Hornbill Aceros nipalensis Link to the stamps |
| Blyth's Hornbill Rhyticeros plicatus Link to the stamps |
| Wreathed Hornbill Rhyticeros undulatus Link to the stamps |
| Plain-pouched Hornbill Rhyticeros subruficollis Link to the stamps |
| Knobbed Hornbill Rhyticeros cassidix Link to the stamps |
| Wrinkled Hornbill Rhabdotorrhinus corrugatus Link to the stamps |
|