Henry III (c. 1140 – 21 June 1221) was the Duke of Limburg and Count of Arlon from 1165 to his death. He was the son and successor of Henry II and Matilda of Saffenberg. In 1172, he fought against the Count of Luxembourg, Henry IV the Blind, and then his ally, the Count of Hainaut, Baldwin V. The environs of Arlon were devastated and the duke, overcome, had to recompense the Count of Luxembourg for the wrongs he had done him. In 1183, he supported the election of Folmar of Karden as Archbishop of Trier. This was opposed by the emperor, Frederick Barbarossa.