Kidder County is a county located in the U.S. state of North Dakota. As of the 2020 census, the population was 2,394. Its county seat is Steele.

Jefferson Parish Kidder was an American lawyer and jurist. He served as the non-voting delegate from the Dakota Territory to the United States House of Representatives. Kidder was the only Democratic lieutenant governor of Vermont until John J. Daley in 1965.