Helldorff is a surname. Notable people with the surname include:
, German politician (1804-1860) , chamberlain and canon in Saxony , Prussian landowner and politician Otto von Helldorff (1833–1908), German politician (German Conservative Party) Wolf-Heinrich Graf von Helldorff (1896–1944), German SA-Obergruppenführer, German police official and politician