Castle Doornenburg (Dutch: Kasteel Doornenburg is a Dutch castle from the 13th century.
The castle is located in the eastern part of the province of Gelderland, near the village of Doornenburg. It is one of the biggest and most well-preserved castles in the Netherlands. It consists of the main castle and a front castle which are connected via a small wooden bridge.
The castle was originally a fortified manor built in the 9th century. At this stage, it was known as the Villa Dorenburc. It wasn't until the 13th century that it was converted into a proper castle. Gradually, through the centuries, the castle was expanded further into its current form. The front castle was built in the 15th century. It contains sleeping quarters, a chapel and a farm, the latter being quite a unique feature for a Dutch castle.