Count Carl Gustaf Löwenhielm (January 30, 1790 – May 18, 1858) was a Swedish diplomat and Lieutenant general.
He joined the military in 1809 and in 1811 became courtier in the service of the Crown Prince, the future King Oscar I of Sweden.
He fought in the Russian army against the French in the battles of Borodino and Leipzig and was present during the conquest of Paris in 1814.
He nonetheless managed to accomplish a deal with the Ottoman government through which Swedish merchant ships were allowed to pass through the Bosphorus.
This time the marriage was a happy one, and as Löwenhielm had inherited a large sum of money from his father he retired from diplomatic duties and settles in Värmland on the family estate.