Herzogenrath[a] (Ripuarian: Herzeroa;[b] Limburgish: Hertseraoj;[c] Dutch: 's-Hertogenrade)[d] is a municipality in the district of Aachen in the German state of North Rhine-Westphalia.

It became 's-Hertogenrode or 's-Hertogenrade (Dutch: the Duke's Rode) after the Duchy of Brabant took control of the region; in French it was called Rolduc (Rode-le-Duc).

[5] Following the end of that war, the border fortifications were reduced at various times, although they were not fully dismantled until the early 1990s preparations for the Schengen Area.

Large-scale employers include Saint-Gobain, Aixtron, Vetrotex (textile glass) and Ericsson Eurolab (electronics).

The city hosts a number of electronics start-ups, profiting from the neighbouring Technical University RWTH Aachen.