Kettle River is a city in Carlton County, Minnesota, United States, along the Kettle River, for which it was named. The population was 180 at the 2010 census. It was incorporated in 1921.

The Kettle is an  tributary of the St. Croix River 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 Dakota name Céga watpa entered into English via the Anishinaabe people's Akiko-ziibi, both meaning "Kettle River".