Unlingen (German pronunciation: [ˈʊnlɪŋən]) is a municipality in the district of Biberach in Baden-Württemberg in Germany.

Unlingen lies in southwestern Germany, between the Upper Swabian mountain known as the Bussen and the river Danube.

At the end of the 14th century, the Steward of Waldburg held large portions of the town.

In 1525, 2,000 farmers gathered in Unlingen as it became one of the starting points of the German Peasants' War.

In 1806, during the Napoleonic Wars, Unlingen became a part of the Kingdom of Württemberg and was assigned to the jurisdiction of Riedlingen.