Dettenhausen is a municipality in the district of Tübingen in Baden-Württemberg in Germany.

Dettenhausen is a village in the administrative district (Kreis) of Tübingen, in the Schönbuch Nature Park. It is located 11 km north of Tübingen, and about 25 km south of Stuttgart, the capital of Baden-Württemberg. Dettenhausen was first officially mentioned in the Codex Hirsaugiensis in around 1100 AD as "Detenhusen". Dettenhausen has 5.441 citizens (as of December 31, 2013). Dettenhausen's coat of arms is a red deer against a yellow background with a yellow ear of grains against a red background. Dettenhausen is ideally located to go hiking, swimming, eat great food and visit the Schönbuchmuseum, the local museum with exhibits about stone cutting, forestry and hunting. Dettenhausen has a very active sister city program with two cities, one in the former East of Germany, Treuen and one in Hungary, Tab.