The castle of Esch-sur-Sûre is a fortified castle located in the Luxembourg village of Esch-sur-Sûre.
The first written testimony of the existence of Esch-sur-Sûre can be found in the "Liber aureus Epternacensis". In this book from Echternach Abbey, it is noted that a certain Nebelungus donated his estates with serfs of "Hesc" to the abbey. This act dates back to year 3 of Charlemagne's reign, that is, between October 9, 773 and October 9, 774.