Hardtbach (Rhine)

{{Short description|River in Germany}}

{{Expand German|topic=geo|date=October 2011|Hardtbach (Rhein)}}

{{Infobox river

| name = Hardtbach

| image =

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| mouth = Rhine

| mouth_coordinates = {{coord|50.7625|N|7.0823|E|source:wikidata-and-enwiki-cat-tree_region:DE|display=it}}

| progression = {{RRhine}}

| subdivision_type1 = Country

| subdivision_name1 = Germany

| subdivision_type2 = State

| subdivision_name2 = North Rhine-Westphalia

| length_km = 15.0

| length_ref = {{GeoQuelle|DE-NW|GSK3C}}

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Hardtbach (also: Rheindorfer Bach, Dransdorfer Bach, Alte Bach) is a river of North Rhine-Westphalia, Germany. It is a left tributary of the Rhine near Bonn.