Rottenburg am Neckar (German:[ˈʁɔtn̩bʊʁkʔamˈnɛkaʁ], lit. 'Rottenburg on the Neckar'; until 10 July 1964 only Rottenburg; Swabian: Raodaburg) is a medium-sized town in the administrative district (Landkreis) of Tübingen in Baden-Württemberg, Germany. It lies about 50 kilometres (31 miles) southwest of the provincial capital Stuttgart and about 12 km (7 mi) southwest of the district town Tübingen. Rottenburg is the second-largest town of the district after Tübingen and makes up a secondary centre for the surrounding community. Since 1 May 1972, Rottenburg am Neckar has been a district town (Große Kreisstadt). Rottenburg agreed to an administrative collective with the municipalities of Hirrlingen, Neustetten and Starzach.

Rottenburg is the seat of a Roman Catholic bishop, being the official centre of the diocese of Rottenburg-Stuttgart. Moreover, it has a college of church music and a university of applied sciences (German Fachhochschule), specialising in forestry.