Louis Adolph Peter, 1st Prince of Sayn-Wittgenstein-Ludwigsburg-Berleburg (German: Ludwig Adolf Peter Fürst zu Sayn-Wittgenstein-Berleburg; Russian: ???? ???????´????? ??´?????????, tr.
Pëtr Christiánovic Vítgenštejn; 17 January [O.S.
6 January] 1769 – 11 June 1843), better known as Peter Wittgenstein in English, was a Prince of the German dynasty Sayn-Wittgenstein and Field Marshal in the Imperial Russian Army during the Napoleonic wars.