Vratislaus I, Duke of Bohemia
| Vratislaus I | |
|---|---|
| Duke of Bohemia | |
| Reign | 915 – 13 February 921 |
| Predecessor | Spytihněv I |
| Successor | Wenceslaus I |
| Born | c. 888 |
| Died | 13 February 921 (aged c. 33) |
| Burial | |
| Spouse | Drahomíra |
| Issue | Wenceslaus I, Duke of Bohemia Boleslaus I, Duke of Bohemia Střezislava (?) |
| Dynasty | Přemyslid |
| Father | Bořivoj I, Duke of Bohemia |
| Mother | Ludmila of Bohemia |
Vratislaus (or Wratislaus) I (Czech: Vratislav I.; c. 888 – 13 February 921), a member of the Přemyslid dynasty, was Duke of Bohemia from 915 until his death in 921.