| Henry I | |
|---|---|
 | |
| King of Navarre Count of Champagne | |
| Reign | 1270–1274 |
| Predecessor | Theobald II |
| Successor | Joan I |
| Born | c. 1244 |
| Died | 22 July 1274 Pamplona |
| Burial | |
| Spouse | Blanche of Artois |
| Issue | Prince Theobald Joan I |
| House | |
| Father | Theobald I of Navarre |
| Mother | Margaret of Bourbon |
Henry the Fat (Basque: Henrike I.a, Gizena, French: Henri le Gros, Spanish: Enrique el Gordo) (c. 1244 – 22 July 1274) was King of Navarre (as Henry I) and Count of Champagne and Brie (as Henry III) from 1270 until his death.