Burg Medinghoven, Medieval castle in Hardtberg, Germany.

Burg Medinghoven is a former moated castle in Duisdorf, part of Bonn's Hardtberg district. Its present villa-like manor house was built after 1834 in the Neo-Gothic style by Baron Wilhelm von Neufville, who had the old castle buildings demolished. The northern wing dates from 1896. The building is a protected architectural monument.

Burg Medinghoven began as a moated castle in Duisdorf, in what is now Bonn's Hardtberg district; it was also called Mettekoven, Metinghoven and Medekoven and is probably the remnant of an earlier village. Over the centuries it was inhabited by knightly families including the lords of Meynwege, the lords of Ilem and the von Nesselrode family. After 1834 Baron Wilhelm von Neufville had the old castle buildings demolished and built the present villa-like manor house in the neo-Gothic style; its northern wing dates from 1896. After the First World War the petrochemist Adolf Spilker acquired the estate, which has remained with his descendants.

The name Medinghoven probably survives from a village that once stood here; the castle was also recorded as Mettekoven, Metinghoven and Medekoven. Over the centuries it passed through noble families including the lords of Meynwege, the lords of Ilem and the von Nesselrode family. Since the petrochemist Adolf Spilker bought the estate after the First World War, it has stayed in his descendants' hands.

Burg Medinghoven stands in Duisdorf, part of Bonn's Hardtberg district, at the coordinates 50.71310, 7.03506. The grounds are private property, held by the descendants of Adolf Spilker since the end of the First World War, so the villa-like main house is viewed from outside rather than entered. The building is listed as a Baudenkmal, a protected architectural monument.

The name Medinghoven probably marks the site of a vanished village, and the former moated castle was also recorded as Mettekoven, Metinghoven and Medekoven. The neo-Gothic villa that replaced the old castle buildings after 1834 has belonged to the descendants of the petrochemist Adolf Spilker since he bought it after the First World War.