Waldemar, Valdemar or Woldemar is an Old High German given name.

It consists of the elements wald- "power", "brightness" and -mar "fame".

The Old Norse form Valdamarr (also Valdarr) occurs in the Guðrúnarkviða II as the name of a king of the Danes.

The Old Norse form is also used in Heimskringla, in the story of Harald Hardrada, as the name of a ruler of Holmgard (Veliky Novgorod).

[1][2] The Fagrskinna kings' sagas also have Valdamarr, in reference to both Vladimir the Great and Vladimir Yaroslavovich.