Teinach

{{Short description|River in Germany}}

{{Infobox river

| name = Teinach

| image = Teinachtal glasmuehle.jpg

| image_size =

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| source1_location =

| mouth_location = Nagold

| mouth_coordinates = {{coord|48.6778|8.7253|region:DE-BW_type:waterbody|display=it}}

| progression = {{RNagold}}

| subdivision_type1 = Country

| subdivision_name1 = Germany

| subdivision_type2 = State

| subdivision_name2 = Baden-Württemberg

| length = {{convert|15.8|km|abbr=on}} {{GeoQuelle|DE-BW|LUBW}}

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The Teinach is a river of Baden-Württemberg, southwestern Germany. It is a left tributary of the Nagold and flows for nearly 16 kilometres.

It passes through Bad Teinach-Zavelstein.