Møgeltønder (Danish pronunciation: [ˈmøˀjl̩ˌtsʰønˀɐ]) is a small town in Denmark, located in Møgeltønder Parish, Tønder Municipality, in the southwestern corner of the Danish peninsula of Jutland 5 kilometres north of the Danish-German border and 4 kilometres west of Tønder.

Møgeltønder is known for its picturesque main street, the large 12th-century church, and Schackenborg Castle.

Apart from the large burial chapel of the Schack family, the medieval murals in the choir were restored and repainted in 1890 to show the faces of the current count and his son.

Prince Joachim and his second wife Princess Marie married at Møgeltønder church on 14 May 2008.

South of the church, the town is a good example of a rural Danish town consisting of farmhouses, dating from the 18th and 19th centuries, where the farms have not been moved out to their fields as was customary all over Denmark in the period 1784-c1830 due to agricultural reforms.