Johann Nepomuk Karl, Prince of Liechtenstein (Full name: Johann Nepomuk Karl Borromäus Joseph Franz de Paula) (6 July 1724 – 22 December 1748) was the Prince of Liechtenstein between 1732 and 1748. He was the son of Johann Josef Anton.

When his father died, Johann Nepomuk Karl was only eight and his relative Josef Wenzel

Josef Wenzel, Prince of Liechtenstein

Wenzel I Karl, Prince of Liechtenstein was the Prince of Liechtenstein between 1712 and 1718, 1732 and 1745, and 1748 and 1772....

 ruled as regent. Nepomuk Karl came of age in 1745 and thus took control of Liechtenstein's affairs. In 1744 he had married Maria Josephina von Harrach

Harrach

The Harrach family is a Bohemian and Austro-German noble family. The Grafs von Harrach were among the most prominent families in the Habsburg Empire.-History:...

, (20 November 1727 - 15 February 1788), daughter of Count Friedrich August von Harrach-Rohrau

Count Friedrich August von Harrach-Rohrau

Count Friedrich August von Harrach-Rohrau, , was plenipotentiary minister of the Austrian Netherlands and became Governor-General ad interim from ....

. The couple had two daughters; Marianne (1745-1752) and Maria Antonia (13 June 1749 - 28 May 1813)

Johann Nepomuk died three years later at the age of 24 leaving no male descendants.

Ancestry