Gerolstein is a town in the Vulkaneifel district in Rhineland-Palatinate, Germany. It is the seat of the Verbandsgemeinde Gerolstein, as well as the headquarters to a large mineral water firm, Gerolsteiner Brunnen. It is also approved as a Luftkurort (climatic spa).

La Grande-Duchesse de Gérolstein (The Grand Duchess of Gerolstein) is an opéra bouffe (a form of operetta), in three acts and four tableaux by Jacques Offenbach to an original French libretto by Henri Meilhac and Ludovic Halévy. The story is a satirical critique of unthinking militarism and concerns a spoiled and tyrannical young Grand Duchess who learns that she cannot always get her way.