Sancho I.
Sancho I. designates the following persons:
- Sancho I (Gascony) († 812), Duke of Gascony
- Sancho I. (Navarre) ( Sancho I. Garcés ; ~ 860–925), King of Navarre
- Sancho I (León) (935–966), King of León
- Sancho I (Galicia) (~ 895–929), King of Galicia
- Sancho I (Aragón) (~ 1042–1094), king of Aragón and Navarre
- Sancho I (Portugal) (1154–1211), King of Portugal
- Sancho I (Mallorca) (1277–1324), King of Mallorca
