Gammertingen (German pronunciation: [ˈɡamɐtɪŋən] ⓘ) is a town in the district of Sigmaringen, in Baden-Württemberg, Germany.

Gammertingen is located on the Swabian Jura in the valley of the Lauchert, a tributary of the Danube.

In addition to the core city of Gammertingen with around 5000 inhabitants belong to the whole city five districts, among them the three boroughs Feldhausen, Harthausen and Kettenacker together with the princely Hohenzollern domain Lusthof on the plateau of the Swabian Jura, Bronnen and Mariaberg.

The well-known Helmet of Gammertingen and other rich grave goods from a number of burial grounds provide the information of an early settlement in the time of the Merovingian dynasty.

During the Nazi era, a Reichsarbeitsdienst camp for females was located in Gammertingen.