Carl Nieroth (died 1712) was a Swedish officer and Governor-General of Swedish Estonia 1709–1710 (but never installed) and of Finland 1710–1712.
The exact date and location of his birth are unknown, but it was in Finland. He was a son of the Baltic German Otto Nieroth and Gertrud Baranoff. The first information of his life is as a cornet of the Swedish Army in Swedish Pomerania, 1671. In 1692 he had risen to the rank of Lieutenant Colonel, in 1700 to Major General and in 1704 to Lieutenant General.
During the Great Northern War Nieroth was involved in several successful battles, Battle of Warsaw in 1705 being his greatest success.
After Viborg was lost in 1710, Nieroth was sent to try to reclaim it. He had managed to gather 10,000 men who sieged the city in 1711, but lacked proper equipment to enter it, and had to retreat. He died suddenly while temporarily halting in Sarvlax manor (Finnish: Sarvilahti) in Pernå parish, on January 25, 1712.
He was married on January 7, 1686 in Stockholm to Christina Margareta Horn (d. September 17, 1703).
He was elevated to friherre and count on June 26, 1706.
| Preceded by Niels Jonsson Stromberg af Clastorp |
Governor General of Swedish Estonia 1709 - 1710 |
Succeeded by Russian Governor Generals |