The Kieselbach is a right tributary of the Lichte in Thuringia, Germany, and is 4 km (2.5 mi) long.

The Kieselbach rises in Ernstthal (city quarter of Lauscha) close to the rail station Ernstthal am Rennsteig and the Rennsteig, at the watershed between Franconia and Thuringia in the Thuringian Highland.

On its way northeast through the Thuringian Forest Nature Park, the Kieselbach flows first through the Finsterer Grund (Dark Valley), where a now closed section of the Sonneberg – Probstzella single-track railway line passes over it on a viaduct.

Finally it reaches the housing estate Waschdorf (western municipality part of Lichte).

This article related to a river in Thuringia is a stub.