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. This pattern was given to Altheim by
Leopold I, Holy Roman Emperor, on 21 January 1681. The beaver (), paired with the grass and water, is a reference to Altheim's old name, Altheim am Biberach, and the cartouche refers to Biberach's rule by an Austrian
vogt. ==Transport==