Bryachislav Iziaslavich (Belarusian: Брачыслаў Ізяславіч, Russian: Брячислав Изяславич) (c. 997 – 1044) was the prince of Polotsk between 1001 and 1044.
Either upon his father's death in 1001 or his minor brother Vseslav's in 1003, he inherited the Principality of Polotsk, himself being a child at this time (his grandparents married about 978).
[1] Bryachislav suffered a defeat during the battle on the Sudoma River and fled, leaving behind his Novgorodian prisoners and loot.
The conditions of the mentioned negotiations were following: Bryachislav accepts Kiev, Yaroslav was left with Novgorod while being recognized as the konung of Garðaríki, while Eymund the mercenary was awarded Polotsk.
Numerous historians (O.Senkovsky and M.Sverdlov) reason the fact of Bryachislav gaining the rights on Kiev and Eymund on Polotsk by both being appointed by the konung of Garðaríki.