Kasteel van 's Herenelderen, 16th-century castle in Tongeren, Belgium.

Kasteel van 's Herenelderen is a water castle with an L-shaped main building of reddish-brown brick and light stone bands, rising from a dark moat. A taller wing on the left has a steep slate roof, dormers and a slender spire; a longer, lower wing extends to the right under a hipped slate roof. A small stone bridge leads to the entrance on the left wing.

The castle came to the Van Renesse family through marriage in the early 16th century after belonging to the Van Hamal family. It has remained in their possession ever since.

The castle was the seat of the lords of Elderen until the end of the ancien régime. Anna van Hamal, heiress of Elderen, married Frederik van Renesse in 1501, and the estate has stayed with the Van Renesse van Elderen family since; Jean de Renesse has been castle lord since 1987. Above the farm's gateway, visitors can spot the Renesse-Bocholtz coat of arms (1640-1681) and, over the barn door, that of Renesse-Stepraedt (1681-1716).

The castle is a private residence and cannot be visited inside. The main building and its moat can be seen from Sint-Stefanusstraat, opposite Saint Stephen's Church; the landscaped park and pond lie behind the walls.

The square corner tower of the farm wing has four storeys and a constricted needle spire covered in slate. A stone plaque on the street facade bears a double-headed eagle, and the gateway carries the Renesse-Arckel arms dated 1627, while the yard side shows the Renesse-Bocholtz arms (1640-1681).