Count Johan Caspar Herman Wedel Jarlsberg (21 September 1779 – 27 August 1840) was a Norwegian statesman and nobleman.

[1] Wedel Jarlsberg was born in Montpellier, France, son of diplomat Frederik Anton Wedel-Jarlsberg (1748–1811) and Catharina von Storm (1756–1802).

His younger brother Ferdinand Carl Maria Wedel-Jarlsberg (1781–1857) was a military officer and commanding general of the Royal Norwegian Army.

[5] During the Napoleonic Wars, his connections with Sweden increased, and when the appointed and adopted Swedish crown prince, Carl August died in 1810, his name was mentioned as a possible substitute in a desperate situation.

His opinions were well known to the educated public, and even if he was politically isolated to some extent, his title and position in the Norwegian society never changed much.

His efforts to restore a Norwegian monetary policy were successful, and he was without contest as the leading force of the government – even with Swedish governors as the formal leaders of the cabinet.

It is beyond doubt that his contributions to diminish the rather aggressive relations between the Parliament – the Storting – and King Carl Johan were decisive.