| Scientific Name | TSN | Taxon Author | Common Name | Name Source | Usage | Reason (ITIS) | Taxon Rank |
|---|
| Tockus alboterminatus | 554411 | (Buttikofer, 1889) | Crested Hornbill Crowned Hornbill | ITIS | valid | | Species |
| Tockus bradfieldi | 554412 | (Roberts, 1930) | Bradfield's Hornbill | ITIS | valid | | Species |
| Tockus camurus | 554404 | Cassin, 1857 | Red-billed Dwarf Hornbill | ITIS | valid | | Species |
| Tockus deckeni | 554410 | (Cabanis, 1868) | Von der Decken's Hornbill | ITIS | valid | | Species |
| Tockus erythrorhynchus | 554406 | (Temminck, 1823) | Red-billed Hornbill | ITIS | valid | | Species |
| Tockus fasciatus | 554413 | (Shaw, 1811) | African Pied Hornbill | ITIS | valid | | Species |
| Tockus flavirostris | 554407 | (Ruppell, 1835) | Eastern Yellow-bellied Hornbill Northern Yellow-billed Hornbill | ITIS | valid | | Species |
| Tockus hartlaubi | 554403 | Gould, 1861 | Black Dwarf Hornbill | ITIS | valid | | Species |
| Tockus hemprichii | 554414 | (Ehrenberg, 1833) | Hemprich's Hornbill | ITIS | valid | | Species |
| Tockus jacksoni | 554409 | (Ogilvie-Grant, 1891) | Jackson's Hornbill | ITIS | valid | | Species |
| Tockus leucomelas | 554408 | (Lichtenstein, 1842) | Southern Yellow-billed Hornbill | ITIS | valid | | Species |
| Tockus monteiri | 554405 | Hartlaub, 1865 | Monteiro's Hornbill | ITIS | valid | | Species |
| Tockus nasutus | 554415 | (Linnaeus, 1766) | African Grey Hornbill | ITIS | valid | | Species |
| Tockus pallidirostris | 554416 | (Hartlaub & Finsch, 1870) | Pale-billed Hornbill | ITIS | valid | | Species |
