Burg Herrenzimmern, Medieval castle in Rottweil, Germany.

Burg Herrenzimmern is a medieval castle on a mountain spur near Rottweil, surrounded by deep gorges with walls reaching four stories in places. The grounds include chapel ruins, residential structures, and a festival area with shelter and a fountain.

The castle was held by Gottfried von Zimmern during the Werdenberg feud and passed in 1501 to his illegitimate son Heinrich, who rebuilt it after a fire in 1504. In 1594 the last male Zimmern heir's eight sisters sold it to Rottweil. Already obsolete as a fortress, it was spared in wars and decayed.

The chapel ruins display a bronze relief of Saint James created by artist Tobias Kammerer, inviting quiet reflection. This artwork brings a contemporary spiritual dimension to the site.

The ruin lies on a narrow spur about 170 m long and 30–40 m wide, in a side valley of the Neckar above Herrenzimmern. The former Lusburg stood roughly 500 m to the east-southeast, above Talhausen. The Herrenzimmern history and culture society maintains the site with the state heritage office.

The grounds can be used by groups for gatherings during warmer months, with barbecue facilities and shelter available. This makes the site a rare connection between history and community use.