St. Olav's Abbey, Stavanger (Olavsklosteret i Stavanger) was a house of Augustinian Canons in Stavanger in Norway.
It is believed to be one of the first Augustinian monastic foundations in Norway, if not the first. The exact date of foundation is unknown, but it was certainly there by 1160. It was dedicated to Saint Olav.
It is last recorded in 1236, and seems to have been moved to the newly-founded Utstein Abbey, established in the reign of Magnus VI of Norway (1263-80). The lands and possessions of the earlier monastery were also transferred to the ownership of Utstein.
The abbey church in Stavanger remained in use until the Reformation but in 1577 permission was given to demolish it and to reuse the stone.
The site was on the present Haakon VII's gate. Ruins were discovered in 1847, but they are no longer visible.