Vseslav of Polotsk or Vseslav Bryachislavich (c. 1039 – 1101), also known as Vseslav the Sorcerer or Vseslav the Seer, is the most famous ruler of Polotsk and is briefly Grand Prince of Kiev in 1068–1069.

Together with Rostislav Vladimirovich and voivode Vyshata, he makes up a coalition against the Yaroslaviches triumvirate ruling the 'Rus lands.

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Polotsk's Cathedral of Holy Wisdom (completed in 1066) is one of the most enduring monuments on the lands of modern Belarus and dates to his 57-year reign.