The Elzbach (also: Elz) is a small river in Rhineland-Palatinate, Germany, a left tributary of the Moselle. It rises in the Eifel, near Kelberg. The Elz flows through Monreal and along the castle Burg Eltz. It flows into the Moselle in Moselkern, in the Verbandsgemeinde of Treis-Karden.