Lyse Abbey
（重定向自Lysekloster）
![View of the monastery courtyard](/Images/godic/202501/25/Lysekloster_garden4858.jpg")
![View of the monastery courtyard through the remains of the cloister, facing south-east](/Images/godic/202501/25/Lysekloster4858.JPG")
Lyse Abbey or Saint Mary's Abbey, Lyse (Norwegian:Lyse kloster, Lyse Mariakloster) is a now-ruined Cistercian monastery in the municipality of Os in the county of Hordaland in south-western Norway. The name "Lyse" is derived from the Lysefjorden, "the fjord of light", near which the building stood. The abbey lies at the southern base of the Lyshornet mountain.