| Henry I | |
|---|---|
| Count Henry I of Vianden | |
| Reign | 1220–1252 |
| Marquis Henry III of Namur jure uxoris | |
| Reign | 1229–1237 |
| Born | c. 1190/1210 |
| Died | 1252 |
| Spouse | Margaret, Marchioness of Namur |
| Issue | Matilda Philip I Henry I van Vianden Yolanda of Vianden Frederic of Vianden Peter |
| House | House of Sponheim/Vianden |
| Father | Frederic III, Count of Vianden |
| Mother | Mechthild (Mathilde) of Neuerburg |
Henry I (c.1200–1252) was the hereditary Count of Vianden from 1210 and, through his wife, Marquis of Namur from 1229.