Boleslaus II

Boleslaus II (Boleslav II, Boleslaw II, Bolesław II) may refer to:


 * Boleslaus II, Duke of Bohemia (died 999)
 * Bolesław II the Generous (c. 1041 or 1042–1081 or 1082)
 * Bolesław II, Duke of Cieszyn (c. 1425/28–1452)
 * Bolesław II the Horned (c. 1220/5–1278; a.k.a. Bolesław II the Bald), Duke of Kraków in 1241, of Southern Greater Poland 1241–1247, and of all Silesia–Wrocław 1241–1248
 * Bolesław II of Masovia (c. 1251–1313)