Elzach (German pronunciation: [ˈɛlt͡sax] ⓘ; Low Alemannic: Elze) is a town in the district of Emmendingen, in Baden-Württemberg, Germany.

It is situated on the river Elz, 26 km northeast of Freiburg.

The town of Elzach is located at the eastern border of the district of Emmendingen and borders on the district of the Ortenaukreis and the Schwarzwald-Baar-Kreis.

Topographically is the area characterised by the river valley of the Elz and the local hill called Rohrhardsberg.

Also Elzach belongs to the Breisgau area and is located at the edge of the Southern Black Forest Nature Park.