The Peace of Bautzen or the Peace of Budziszyn was a treaty concluded on January 30, 1018, between the Ottonian Holy Roman Emperor Henry II and the Piast duke of the Polans Bolesław I Chrobry which ended a series of Polish-German wars over the control of Lusatia and Upper Lusatia (Milzenerland or Milsko, the eastern part of the margraviate of Meissen (Miśnia)) as well as Bohemia, Moravia and Slovakia.

Bolesław had enjoyed the close friendship of the emperor Otto III and after his death supported one of Otto's followers, Eckard I, Margrave of Meissen for the position of Holy Roman Emperor, against the claims of Henry II.

After both emperor Otto III and Eckard's death in 1002, Bolesław took over Eckard's domain of Meissen, as well as the march of Lusatia. Once Henry secured his position within Germany, an agreement was reached which left Bolesław with Lusatia and Upper Lusatia while the Polish duke in turn recognized Henry as Holy Roman Emperor