The Kocher (German pronunciation: [ˈkɔxɐ] ⓘ) is a 169 km (105 mi)-long[2] right tributary of the Neckar in the north-eastern part of Baden-Württemberg, Germany.

In contrast, the Schwarzer Kocher flows rather slowly and the covered ground gives the water a dark color.

Both headwaters join in Unterkochen and flow north through the city of Aalen and Wasseralfingen until Hüttlingen, where the Kocher turns west in the direction of Abtsgmünd.

The Kocher then winds further north-west to Unterrot, where it receives the river Rot and continues to the cities Gaildorf and Schwäbisch Hall.

After only a six years remediation project, the water quality significantly improved and today the Kocher is only moderately polluted.