The municipality lies at the northern edge of the district, along its border with the district of Rottweil. Inside Schwarzwald-Baar, Dauchingen borders Villingen-Schwenningen.
Dauchingen, situated in the northern part of Schwarzwald-Baar, is adjacent to the district of Rottweil. Inside Schwarzwald-Baar, Dauchingen borders Villingen-Schwenningen.