Castell de Llorenç is a medieval castle located in the mountainous wine-producing Priorat region of la Morera de Montsant in Tarragona province, Catalonia. Dating to the 13th century, the castle stands as part of a network of fortifications that once dominated the Serra de Montsant landscape. Now designated as a bien de interés cultural (cultural property of interest), the remaining walls of this historic structure occupy a hilltop position, offering views across the dramatic terrain of this historic wine region. The castle represents an important example of medieval Catalan defensive architecture in the Priorat.