Baron Aschwin of Sierstorpff-Cramm (German: Freiherr Aschwin von Sierstorpff-Cramm; 29 March 1846 – 14 October 1909) was a German nobleman who was the chamberlain of the Duchy of Brunswick.
Aschwin married on 24 September 1872 at Bad Driburg to Baroness Hedwig of Sierstorpff-Driburg (1848–1900), member of a Prussian noble family.
She was daughter of Count Ernst of Sierstorpff-Driburg (1813-1855) and his wife, Baroness Karoline of Vincke (1822-1870).
Later he served as Master of the Horse where he met with the Sultan of the Ottoman Empire.
He settled on his estate of Reckenwalde, Province of Brandenburg (now Wojnowo, Poland).