St. Juliana's Abbey was a Benedictine monastery in Rottum, the Netherlands. The abbey, dedicated to the virgin-martyr Juliana of Nicomedia, was probably founded between 1195 and 1210 by monks from the Benedictine Werden Abbey in Germany. After its foundation hundreds of idols, Fosta and Thor among them, were stolen by Liudger from the monastery and transported to Utrecht and other locations. The monastery was owner of two-thirds of the nearby island of Rottumeroog. The monastery was demolished at the end of 1800. Nearby was a nunnery named Bethlehem.