Boleslaus

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

In dukes of Bohemia:
* Boleslaus I of Bohemia (died 967 or 972), known as 'the Cruel', ruling from 929 (or 935) to 972 (or 967)
* Boleslaus II of Bohemia (c.920–999), known as 'the Pious', ruling from 927 to 999
* Boleslaus III of Bohemia (died 1037), known as 'the Red' or 'the Blind', ruling from 999 to 1002

In monarchs of Poland
* Boleslaw I of Poland (c.966–1025), known as 'the Brave' or 'the Valiant', Duke of Poland from 992 to 1025 (ending in 1025 as King of Poland)
* Bolesław II of Poland (1039–1081), known as 'the Generous' or 'the Cruel', Duke of Poland 1058 to 1076 and King of Poland 1076 to 1079
* Bolesław III Wrymouth (1085–1138), Duke of Poland from 1102 to 1138
* Bolesław IV the Curly (1120–1173), High Duke of Poland from 1146 to 1173
* Boleslaus of Greater Poland (c.1221–1279), known as 'the Pious', Duke of Greater Poland 1239–1247
* Bolesław V the Chaste (1226–1279), mid-13th Century ruler of Cracow, who rebuilt the city after its destruction in 1241
* Bolesław of Kujawy (1159–1195), Duke of Kuyavia from c. 1186 to 1195
* Boleslaus I of Masovia (1208–1248), Duke of Sandomierz, Sieradz (1233–1234), and Masovia (1229–1248)
* Boleslaus II of Masovia, Duke of Masovia (c.1250–1313)
* Boleslaus George of Masovia, Duke of Masovia, Halych, and Volodymyr (?–1340)
* Boleslaus III of Płock, Duke of Płock (c.1325–1351)
* Boleslaus IV of Warsaw, Duke of Warsaw (1421–1454)
* Boleslaus V of Warsaw, Duke of Warsaw, Zakroczym, Nur, Płock, and Wizna (1454–1488)
* Bolesław I of Cieszyn, Duke of Cieszyn
* Bolesław II of Cieszyn, Duke of Cieszyn

In cities:
*Brandýs nad Labem-Stará Boleslav, Czech Republic
*Mladá Boleslav, Czech Republic