Hambach is a municipality in the district of Rhein-Lahn, in Rhineland-Palatinate, in western Germany. It belongs to the association community of Diez. Hambach was first mentioned in 1290 in a necrology from "Stift St. Lubentius zu Dietkirchen". Hambach belonged to the shire of Diez. From 1794 temporarily occupied by the French, the village became part of t…Hambach is a municipality in the district of Rhein-Lahn, in Rhineland-Palatinate, in western Germany. It belongs to the association community of Diez. Hambach was first mentioned in 1290 in a necrology from "Stift St. Lubentius zu Dietkirchen". Hambach belonged to the shire of Diez. From 1794 temporarily occupied by the French, the village became part of the Herzogtum Nassau, which was annexed to Prussia in 1866. Since 1946 the village is part of the Rhineland-Palatinate.