Altheim (German pronunciation: [ˈalthaɪm]) is a municipality in the Biberach district of Baden-Württemberg, Germany.

With German mediatization, Altheim was in 1806 granted to the Kingdom of Württemberg from the County of Thurn und Taxis.

[3] The municipality (Gemeinde) of Altheim covers 2,374 hectares (5,870 acres) of the Biberarch district of the state of Baden-Württemberg, in the Federal Republic of Germany.

[3] The Storchenwiesen Federally-protected nature reserve (Naturschutzgebiet) is located within Altheim's municipal area.

[3] The municipal coat of arms for Altheim show a beaver, facing right but turned to the left, holding a cartouche topped with a ducal crown, both of gold, containing the Austrian flag in its front paws standing on a grassy shore upon a field divided party per fess into gold and red sections.