Peredur (Old Welsh Peretur) is the name of a number of men from the boundaries of history and legend in sub-Roman Britain. The most well known of them appear in the following literary and historical sources:

Gwrgi and Peredur are listed as sons of Eliffer (Old Welsh: Elidir, or Eleuther) "of the great warband" (cascord maur) and as scions of the Coeling dynasty in the genealogies of Harleian MS 3859, making them first cousins of Urien Rheged. Likewise, a pedigree from Jesus College MS 20 includes Gwrgi and Peredur as brothers together with one Arthur penuchel. Their principal claim to fame rests on their having fought in the Battle of Arfderydd. The Annales Cambriae report that this battle (bellum Armterid) was fought in 573, but gives no further detail. A later expansion of the entry names Gwrgi and Peredur, both described as sons of Eliffer, as the chieftains on the victorious side and tells that Gwenddolau was defeated and slain in the battle. Under the year 580, the Annales Cambriae record the deaths of Gwrgi (Guurci) and his brother Peredur (Peretur). These references give them a place as heroes in the old Brythonic North or Hen Ogledd of the late 6th century.