The Croyland or Crowland Chronicle is an important primary source for English medieval history, particularly the late 15th century. It is named for its place of origin, the Benedictine Abbey of Croyland or Crowland, in Lincolnshire, England. It was formerly also known as the Chronicle of Ingulf or Ingulphus after its supposed original compiler, the 11th-century abbot Ingulf. As that section of the text is now known to have been a later forgery, he is instead known as Pseudo-Ingulf.
The first entry of the chronicle concerns AD 655; the last, 1486.
A forged part of the text was formerly used to support the existence of a form of the congé d'élire—royal power over investiture of bishops—in Anglo-Saxon England prior to the Norman Conquest.
The part that covers the years 1459–1486 was written in April 1486 (after Henry Tudor had become Henry VII of England) by someone who had access to information from the court of Richard III—described as being a doctor of canon law and member of Edward IV's council. Some historians believe that author was John Russell, Bishop of Lincoln, who was Richard's Chancellor for most of his reign (until Richard dismissed him on July 24, 1485) but who now wanted to please the new king Henry. Others conclude the work was written by a monk of Crowland who has edited a secular source.