The Southern Black Forest Nature Park (German: Naturpark Südschwarzwald) is located in Baden-Württemberg in Germany and covers an area of 394,000 hectares (970,000 acres). As of 2018, it is Germany's largest nature park.

The Southern Black Forest Nature Park was established on February 1, 1999. The original area of 333,000 hectares was expanded to 370,000 hectares in 2005, and finally to its present size of 394,000 hectares in 2014. It is one of seven nature parks in Baden-Württemberg.

It is located in the Southern Black Forest in the south-west of Baden-Württemberg, extending from Herbolzheim and Triberg in the north to Waldshut-Tiengen and Lörrach in the south and from the Black Forest foothills near Freiburg and Emmendingen in the west to Donaueschingen and Bad Dürrheim on the high plateau of the Baar in the east.