The Zumbro River is a tributary of the Mississippi River in the Driftless Area of southeastern Minnesota in the United States. It is long from the confluence of its principal tributaries and drains a watershed of . The river's name in English is a change from its French name Rivière des Embarras (Embarrass River/Obstruction River) due to its mouth located near Pine Island in the Mississippi River; the Dakota name for this river is Wapka Wazi Oju (Pines Planted River), having reference to the grove of great white pines at Pine Island.