Rudolf III von Hohenberg

Rudolf III of Hohenberg (died 1389) was a Swabian count of Hohenberg, succeeding his father Rudolf II around 1336. His kinswoman Gertrud of Hohenberg was the wife of King Rudolf of Habsburg. Rudolf married Ida of Toggenburg, who bore him a daughter but no son, and he was deep in debt.

On 26 October 1381 he sold the entire county of Hohenberg for 66000 gold gulden to Duke Leopold III of Austria, and comital rule in his line ended. He died before 30 November 1389, the last male of the Hohenberg-Rotenburg branch.