Henrik Magnus von Buddenbrock (July 22, 1685 – between July 16 and July 27, 1743) was a Swedish baron and Lieutenant General. He and Carl Emil Lewenhaupt were executed for negligence in the Russo-Swedish War, in the aftermath of the defeat at Villmanstrand.
He was born on July 22, 1685 in Swedish Livonia. He was the son of the landed gentleman and Swedish Empire army officer Henrik Gotthard von Buddenbrock (1648–1727) and Charlotta Cronman. He enlisted as an officer of the Swedish army, becoming a captain of the Life Guards in 1711, Major of grenadiers in 1715, Major General in 1721. He was elevated to friherre (matricle number 206) in 1731 and promoted to Lieutenant General of the infantry in 1739. As such, he was in 1741 commander of the troops in Finland, under General Charles Emil Lewenhaupt, at the onset of the Russo-Swedish War.
On August 23, 1741 (September 3, 1741), Swedish Major General Carl Henrik Wrangel and his corps in Villmanstrand in Karelia, at the long disputed frontier between Sweden and Russia, was attacked and defeated by a Russian army under General Peter Lacy before Buddenbrock, less than 10 kilometers away, could come to his assiantance.