Ribeirão Barra Mansa

{{Infobox river

| name = Ribeirão Barra Mansa

| image =

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| source1_location = São Paulo state

| mouth_location =

| mouth = Tietê River

| mouth_coordinates = {{Coord|21|21|S|49|37|W|display=inline,title}}

| subdivision_type1 = Country

| subdivision_name1 = Brazil

| length =

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}}

The Ribeirão Barra Mansa is a river of São Paulo state in southeastern Brazil.