Carl Gustaf Armfeldt (9 November 1666 – 24 October 1736) was a Swedish officer, general and friherre (baron) who took part in the Great Northern War. He was born in Swedish Ingria to lieutenant colonel Gustaf Armfelt and Anna Elisabet Brakel. Like other members of his family Armfelt devoted himself to war and at seventeen years' age joined Nylands kavalleri as a cadet. In 1685 he left this position and left for France where he joined prince Ferdinand of Fürstenburg's regiment as a mere footsoldier. He campaigned in France for twelve years and returned to Sweden as a captain.