Burg Kommern, Medieval castle in Mechernich, Germany.

Burg Kommern is a hilltop castle at 263 m above sea level in the Kommern district of Mechernich. Built around 1350, its residential tower dates from that period. The interlocking building complex hides behind an elaborate symmetrical courtyard facade, and a landscape park with rare trees surrounds it.

Burg Kommern was built around 1350, and its residential tower likely dates from that time. It was never a noble residence but served as the administrative seat of the Arenberg bailiff of the imperial lordship of Kommern until 1794. The castle was added to the monument list of the city of Mechernich on 5 December 1989.

The castle's name recalls the Reichsherrschaft Kommern, whose Arenberg Amtmann resided here until 1794; the Arenbergs, burgraves of Cologne in the 12th and 13th centuries and later dukes, drew their wealth from mining in the region. In the hall hangs a coloured wallpaper by Josef Dufour, printed in Mâcon in 1804, depicting Captain Cook's voyages; only nine examples survive worldwide, six of them in manor houses of the American South.

Burg Kommern is privately owned and was still in the hands of the Seul family in 2017, so the buildings and the surrounding landscape park are not open to visitors. The complex sits on a hill at 263 m above sea level within the Kommern district of Mechernich. Since 2019 the site has been designated in the land-use plan as a private green space, the historic park and castle grounds.

The castle was never a noble residence but an administrative seat of the Arenberg bailiff of the Reichsherrschaft Kommern until 1794. In the hall hangs a coloured wallpaper by Josef Dufour, printed in Mâcon in 1804, showing Captain Cook's voyages; nine copies survive worldwide, six of them in manor houses of the American South.