Saint Bercharius (Bererus; French: Berchaire) (636 – March 28, 696) was abbot of Hautvillers in Champagne.
Descended from a distinguished Aquitanian family, he received his instruction from Saint Nivard (Nivo), Archbishop of Reims.
He founded two religious houses in the Diocese of Châlons-sur-Marne, the one (Puisye or Montier-en-Der Abbey) for men, the other (Pellmoutier or Puellarum Monasterium) for women.
These institutions he enriched by donations of valuable relics, procured on a journey to Rome and the Holy Land.
According to one account, Bercharius did not condemn or complain about the injury he received, but instead asked Daguin to perform penance and to make a pilgrimage to Rome to obtain pardon and absolution.