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| Boleslaus III the Red | |
|---|---|
 Fresco in the Znojmo Rotunda, 12th-century | |
| Duke of Bohemia | |
| Reign | February 999 – May 1002 |
| Predecessor | Boleslaus II |
| Successor | Vladivoj |
| Duke of Bohemia | |
| Reign | February – March 1003 |
| Predecessor | Vladivoj |
| Successor | Bolesław I the Brave |
| Born | c. 965 |
| Died | Poland |
| Spouse | not known |
| Issue | not known |
| Dynasty | Přemyslid |
| Father | Boleslaus II, Duke of Bohemia |
| Mother | Adiva |
Boleslaus III (c. 965 – 1037), called the Red (Czech: Boleslav III. Ryšavý; to denote a "red-haired" individual) or the Blind, a member of the Přemyslid dynasty, was Duke of Bohemia from 999 until 1002 and briefly again during the year 1003. During his chaotic reign, Bohemia became a pawn in the long German–Polish War between King Henry II and Duke Bolesław I, "the Brave", of Poland.