| Hugh I, Count of Rethel | |
| Issue: | Gervais Baldwin II Matilda Hodierna Cecilia |
| Noble Family: | de Rethel |
| Father: | Manasses III, Count of Rethel |
| Mother: | Judith of Lorena |
| Spouse: | Melisende of Crécy |
| Birth Date: | 1040 |
| Birth Place: | Bourg |
| Death Date: | 1118 |
| Death Place: | Rethel |
Hugh I, Count of Rethel (1040–1118) was a son of Count Manasses III of Rethel and his wife Judith. He succeeded his father as Count of Rethel in 1065.
Hugh married Melisende of Crécy, the daughter of Lord Guy I of Montlhéry. They had the following children: