Vitskøl Abbey (Danish: Vitskøl Kloster; Latin: Vitae Schola, meaning "school of life") is a former Cistercian monastery near Ranum in Himmerland in Region Nordjylland, Denmark, one of the oldest existing monastic complexes in northern Europe.
Vitskøl Abbey was founded by Cistercian monks under Abbot Henrik while in exile from Varnhem Abbey in Sweden during a conflict with Queen Christina Björnsdotter of Sweden. The monks from Varnhem were later replaced by monks from Esrum Abbey, which is reckoned the mother house of Vitskøl.
It stood on an ancient trade route through north central Denmark on land given to the Cistercians by King Valdemar I the Great after his victory over King Sweyn III at the Battle of Grathe Heath, with the intent of building the largest church in Scandinavia. The exact date of the foundation is not known, but work on the buildings commenced in 1158.
As early as 1165 the community of Vitskøl had grown sufficiently to attempt to found a daughter house at Sabro. The soil conditions prevented the monks from farming successfully and they moved to Sminge, but faced the same conditions and moved on to the recently abandoned Veng Abbey, which disputes about land claims forced them to leave. They next attempted to settle on the isle of Kalvø in Skanderborg Lake, but it too failed because of the poor soil. Lastly the monks moved to the site of Øm Abbey, which succeeded.