Wettingen (Swiss German: Wettigä) is a residential community in the district of Baden in the Swiss canton of Aargau. With a population about 20,000, Wettingen is the largest municipality in the canton.

Wettingen is located on the right bank of the Limmat river, located in the Limmat Valley (German: Limmattal), before the deep valley in Baden. Most of the town is located on the Wettingerfeld (Wettinger Field), which is a flat plain surrounded on all sides by natural borders: to the south and west by the Limmat, to the north by the steep southern slope of the Lägern, and to the East by the Sulperg (569 m (1,867 ft)). A vineyard is located on a section of the Lägern’s slope. Between the Lägern and the Sulperg is the undeveloped Eigital (Eigi valley). At the Eigital’s west end, in the northeastern section of the Wettingerfeld, is the relatively well-maintained old village center. A small creek flows through the Wettingerfeld and empties into the Limmat at the Gottesgraben. The stream is partially directed, partially buried, and partially re-naturalized.