Reuss, name of two German principalities stretching between Bavaria on the S. and Prussia on the N.; they belong to the elder and younger branches of the Reuss family. The former is called Reuss-Greiz (63), the latter Reuss-Schleiz-Gera (120); both are hilly, well wooded, and well watered; farming and textile manufacturing are carried on. Both are represented in the Reichstag; the executive is in the hands of the hereditary princes, and the legislative powers are vested in popularly elected assemblies.