Bündheim (German: [ˈbʏnthaɪm]; Oker dialect: Binten [ˈbɪntən]) is a village that forms a part (Stadtteil) of Bad Harzburg in the district of Goslar in Lower Saxony, Germany.

[1] Bündheim is positioned between the Harz mountains to the south and the valley of the Radau to the north.

The Bündheim castle as the seat of this district was destroyed in 1626 during Thirty Years' War, after it reconstruction it had to be torn down owing to construction errors.

On January 1, 1963, Bündheim merged with Schlewecke to the new community Bündheim-Schlewecke that was incorporated into Bad Harzburg nine years later, on July 1, 1972.

Bündheim is penetrated by the Landesstraße L 501, leading from Eckertal at the border to Saxony-Anhalt through Bad Harzburg to Göttingerode and Oker.