Adhemar (also known as Adémar, Aimar, or Aelarz) de Monteil (died 1 August 1098) was one of the principal figures of the First Crusade and was bishop of Puy-en-Velay from before 1087. He was the chosen representative of Pope Urban II for the expedition to the Holy Land. Remembered for his martial prowess, he led knights and men into battle and fought beside them, particularly at the Battle of Dorylaeum and Siege of Antioch. Adhemar is said to have carried the Holy Lance in the Crusaders’ desperate breakout at Antioch on 28 June 1098, in which superior Islamic forces under the atabeg Kerbogha were routed, securing the city for the Crusaders. He died in 1098 due to illness.