Karl Fyodorovich von Knorring (; 22 May 1746 - 12 February 1820) was a lieutenant-general of the Russian Empire.
Karl Heinrich von Knorring was born into the Knorring family, which belonged to the Baltic German nobility. Karl's elder brother, Bogdan von Knorring (1746âÂÂ1825) was also a Russian general. He served as the inspector of the Caucasian Line from March 1799 to late 1802. He played an important role in the incorporation of Eastern Georgia (Kartli-Kakheti) into the Russian Empire. He was dismissed as a result of being unable to make the area stable, as well as the corruption of his appointed officials.
Karl was married to Varvara Vladimirovna Davidova (), member of the Russian nobility. The marriage produced no children.
He died after 1805.