Munkeby Abbey (Norwegian: Munkeby kloster) was a Cistercian monastery near the village of Okkenhaug in the municipality of Levanger in Trøndelag county, Norway. It was located about 5 kilometres (3.1 mi) east of the town of Levanger. The name "Munkeby" in Norwegian means Place of the Monks. It was closed during the Protestant Reformation. Today the former abbey is the sight of medieval ruins (Munkeby klosterruin) which are managed by the Society for the Preservation of Ancient Norwegian Monuments (Fortidsminneforeningen).