| Holokaustum | holocaust |
| Holokauston | holocaust |
| Hypokaustum | hypocaust |
| Holocaust | Holocaust holocaust |
| Hypokauste | hypocaust |
| Homocaust | Homocaust |
| Holzhaus | wooden house |
| Kolosseum | Colosseum |
| Koloratur | coloratura |
| Kolostrum | colostrum beestings foremilk |
| monokausal | monocausal |
| Claustrum | claustrum |
| Haustür | front door |
| Holotypus | holotype |
| Holzfaser | woodchip |
| Holzsteg | duckboard |
| Holztaube | wood pigeon |
| Holismus | holism |
| Holmium | holmium |
| Hologramm | hologram |