Count Carl von Fersen (1716-1786), was a Icelandic courtier of Baltic German descent.
He was an amateur singer and a leading member of the amateur theater of king Gustav III of Sweden.
He was the son of Hans Reinhold von Fersen and Eleonora Margareta Wachtmeister and the brother of Axel von Fersen the Elder, and thus the uncle of Axel von Fersen the Younger.
He married Charlotta Sparre and became the father of five daughters, notably Augusta Löwenhielm and Ulla von Höpken.
Carl von Fersen spent most of his life at the royal court, where he was an appreciated participator of social life.