| Horatio Nelson | Horatio Nelson |
| Horatiu Radulescu | Horaţiu Rădulescu |
| Horatius Coclès | Horatius Cocles |
| Horb | Horb |
| Horb am Neckar | Horb am Neckar |
| Horchata de chufa | Horchata |
| Horcruxe | Horcrux |
| Hordaland | Hordaland |
| horde | horde |
| Horde d'Or | Golden Horde |
| Horeca | Horeca |
| Horemheb | Horemheb |
| Horgen | Horgen |
| Horgoš | Horgoš |
| Horikawa | Emperor Horikawa |
| Horiki | Horiki |
| horizon | horizon |
| Horizon artificiel | Attitude indicator |
| horizon des événements | event horizon |
| Horizons perdus | Lost Horizon |
| horizontal | level |
| Horizontal Falls | Horizontal Falls |
| horizontale | horizontal |
| Horka | Horka |
| Horlivka | Horlivka |
| horloge | clock |
| Horloge astronomique de Prague | Prague Astronomical Clock |
| Horloge astronomique de Strasbourg | Strasbourg astronomical clock |
| Horloge atomique | Atomic clock |
| Horloge au cesium | Cesium clocks |
| Horloge au césium | Cesium clock |
| Horloge biologique | Clock |
| Horloge de la fin du monde | Doomsday Clock |
| horloge de parquet | grandfather clock |
| Horloge moléculaire | Molecular clock |
| horloger | watchmaker |
| horlogerie | watchmaker |
| horlogère | watchmaker |
| Horloogiyn Choybalsan | Khorloogiin Choibalsan |
| hormis | apart from |
| Hormisdas | Pope Hormisdas |
| Hormizd Ier | Hormizd I |
| Hormizd II | Hormizd II |
| Hormizd III | Hormizd III |
| Hormizd IV | Hormizd IV |
| Hormizd VI | Hormizd VI |
| hormone | hormone |
| Hormone adrénocorticotrope | ACTH |
| Hormone antimullérienne | Anti-müllerian hormone |
| Hormone corticotrope | Adrenocorticotropic hormone |
| Hormone juvénile | Juvenile hormone |
| Hormone peptidique | Peptide hormone |
| Hormone trophique | Tropic hormone |
| Hormonothérapie | Hormone therapy |
| Hormozgan | Hormozgān Province |
