Dierstein Abbey (German: Kloster Dierstein) was a Benedictine nunnery, on the site now occupied by Schloss Oranienstein near Diez an der Lahn, Rhineland Palatinate, Germany.
A second church is recorded in 1221, dedicated to John the Baptist.
[1] In 1466 Abbess Elisabeth Beyer von Boppard, who came from Marienberg Abbey (near Boppard), introduced the statutes of the Bursfelde Congregation.
[1] During the construction of the Schloss Oranienstein's main wing between 1672 and 1681, stones were re-used from the chapel and the nunnery ruins.
During the 1704-09 rebuild of the Schloss, the last visible ruins of the monastic buildings disappeared.