Ludden is a city in Dickey County, North Dakota, United States. The population was 15 at the 2020 census. Ludden was founded in 1886. Ludden was platted in 1886. It was named for David Ludden, a pioneer settler. Ludden was originally built up chiefly by Finns. A post office was established at Ludden in 1884, and remained in operation until it was discontinued in 1986.