| Henry I, Count of Nassau-Beilstein | |
| Noble Family: | House of Nassau |
| Father: | Henry I, Count of Nassau-Siegen |
| Mother: | Adelaide of Heinsberg-Blankenberg |
| Spouse: | Meyna of Westerburg |
| Birth Date: | 1307 |
| Death Date: | 1388 |
Henry I, Count of Nassau-Beilstein (1307-1388) was a son of Henry I of Nassau-Siegen and his wife, Adelaide of Heinsberg-Blankenberg. His parents had initially destined him for an ecclesiastical career. However, he later married Meyna of Westerburg and after his father's death became the first count of Nassau-Beilstein.
Henry and Meyna had three children: