Adalelm (died 8 April 894) was the Count of Troyes from 886 to his death.
He succeeded his maternal uncle Robert I, Count of Troyes, in 886.
In 893, he confirmed the donation of Chaource to the abbey of Montiéramey, made originally by his uncle.
In 894, he and his brother Adhemar of Poitou attacked Aurillac, but he died fifteen days after.
Richard, Duke of Burgundy, profited from the troubles that followed his death to seize the county of Troyes.