Abbas Benedictus (died 1194) was abbot of Peterborough. His name was formerly erroneously associated with the Gesta Henrici Regis Secundi and Gesta Regis Ricardi, English 12th century chronicles, which are now attributed to Roger of Howden.
Benedictus first makes his appearance in 1174, as the chancellor of Archbishop Richard, the successor of Becket in the primacy. In 1175, Benedictus became prior of Holy Trinity, Canterbury; in 1177, he received from Henry II the abbacy of Peterborough, which he held until his death. As abbot he distinguished himself by his activity in building, in administering the finances of his house and in collecting a library. He is described in the Chronicon Petroburgense as "blessed both in name and deed".
Benedictus belonged to the circle of Becket's admirers, and wrote two works dealing with the martyrdom and the miracles of his hero. Fragments of the former work have come down to us in the compilation known as the Quadrilogus, which is printed in the fourth volume of James Craigie Robertson's Materials for the Histories of Thomas Becket ("Rolls" series); the miracles are extant in their entirety, and are printed in the second volume of the same collection.