Jouanne

{{Infobox river

| name = Jouanne

| image = Rive_de_la_Jouanne(53).JPG

| image_caption = The Jouanne near Argentré

| map = Jouanne.png

| native_name ={{native name|fr|La Jouanne}}

| source1_location = La Hardière

| mouth_location = Mayenne

| mouth_coordinates = {{coord|48|13|49|N|0|23|28|W|format=dms|display=inline,title}}

| progression = {{RMayenne}}

| subdivision_type1 = Country

| subdivision_name1 = France

| length = {{convert|58.5|km|mi|abbr=on}}

| source1_elevation = {{convert|172|m|ft|abbr=on}}

| discharge1_avg =

| basin_size = {{convert|422|km2|sqmi|abbr=on}}

}}

The Jouanne ({{IPA|fr|ʒwan}}) is a {{convert|58.5|km|mi|abbr=on}} long river in western France located in the department of Mayenne, region of Pays de la Loire. It is a tributary of the river Mayenne on the left side, and so is a sub-tributary of the Loire by Mayenne and Maine.{{Sandre|M34-0300 |la Jouanne}}