Carl Erik Mannerheim (14 December 1759 – 15 January 1837) was a Swedish–Finnish soldier, statesman and member of the Senate of Finland as its first Vice Chairman of the Economic Division, an office corresponding to that of the modern Prime Minister.
Born in Säter, Mannerheim studied at the Uppsala University, which he left to pursue his military career.
He joined the Anjala conspiracy against the King of Sweden Gustav III.
As a result, he was sentenced to death, however, he was pardoned.
He left the army in 1795.
In 1809 Mannerheim became a member of the Diet of Porvoo and took part in the creation of Grand Duchy's institutions.
He was the main figure in the Finnish delegation sent to the Russian Emperor that discussed Finland's future within the tsar's realm.
He became the first Vice Chairman of the Economic Division of the Senate of Finland in 1822 and served until 1826.
He was a great grandfather of Carl Gustaf Emil Mannerheim.