Weissach im Tal (, ) is a municipality (Gemeinde) in the Rems-Murr-Kreis district of Baden-Württemberg, Germany. It belongs to the metropolitan region of Stuttgart . On 31 December 2005 it had a population of 7,205. Weissach im Tal is twinned with Marly in France and Lommatzsch in Saxony. Its mayor is Daniel Bogner.