Schleusenwärterhaus Schleuse 64, Lock keeper's house at Ludwig-Donau-Main Canal in Nuremberg, Germany.

The Schleusenwärterhaus Schleuse 64 is a single-storey keeper's house built between 1836 and 1845 for the Ludwig-Donau-Main Canal in Worzeldorf, a district of Nuremberg. Its walls are quarry stone of red sandstone, it has a gabled roof, and both the windows and the entrance are set in segmental arches. It follows one of the standard plans used for the canal's 69 lock and canal keeper houses.

The building was constructed between 1836 and 1845 as part of a major canal project that connected several major Bavarian rivers. It was one of approximately 69 keeper houses built along the entire route.

The building is one of 69 lock and canal keeper houses built to a single standard plan along the Ludwig-Donau-Main-Kanal, and only a few survive. Its name records the keeper's post at lock 64 in Worzeldorf. The house later served as a filming location for the Tatort episode "Warum".

The house sits directly along the canal and is easily reached from the local paths that run beside the waterway. Visitors can explore the area on foot or by local transport from central Nuremberg.

The house belongs to a small group of original canal-era buildings still visible today that document manual water traffic control. Many similar structures have disappeared or been heavily altered over the decades.