The Kettle is a tributary of the St. Croix River, about 80 mi (130 km) long, in eastern Minnesota in the United States. Via the St. Croix River, it is part of the watershed of the Mississippi River. The river's English name is due to the large number of large rounded holes (kettles) in the sandstone in and around the river, carved out by the swirling waters of the river. The river's native name Akiko-ziibi comes from the Anishinaabe people.