Stackelberg is a surname, mainly known as the surname of a noble family of Baltic German descent. Notable people with the surname include:
Siegfried Nikolai von Stackelberg of Erchless Castle, ScotlandBerndt Otto Stackelberg, Sr. (1662–1734), Swedish Field MarshalBerndt Otto Stackelberg, Jr. (1777–1841), Swedish Field MarshalChristoph von Stackelberg, Estonian, second husband of Josephine BrunsvikErnest Stackelberg (1813–1870), Russian military figure and diplomatFritz Stackelberg (1899–1988), Swedish diplomatGustav Ernst von Stackelberg, Russian ambassador at the Congress of ViennaHeinrich Freiherr von Stackelberg (1905–1946), German economistOtto Magnus von Stackelberg (ambassador) (1736–1800), Russian ambassadorOtto Magnus von Stackelberg (archaeologist) (1786–1837), Estonian archaeologistGarnett Stackelberg (1910–2005), US journalist and socialiteGeorgii Stackelberg (1851 – 1913), Russian Cavalry General