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, Scotland
Berndt Otto Stackelberg, Sr. (1662–1734), Swedish Field Marshal
Berndt Otto Stackelberg, Jr. (1777–1841), Swedish Field Marshal
Christoph von Stackelberg, Estonian, second husband of Josephine Brunsvik
Ernest Stackelberg (1813–1870), Russian military figure and diplomat
Fritz Stackelberg (1899–1988), Swedish diplomat
Gustav Ernst von Stackelberg, Russian ambassador at the Congress of Vienna
Heinrich Freiherr von Stackelberg (1905–1946), German economist
Otto Magnus von Stackelberg (ambassador) (1736–1800), Russian ambassador
Otto Magnus von Stackelberg (archaeologist) (1786–1837), Estonian archaeologist
Garnett Stackelberg (1910–2005), US journalist and socialite
Georgii Stackelberg (1851 – 1913), Russian Cavalry General
