27 August] 1852) was an Imperial Russian military commander, General-Field Marshal (1843), Adjutant General to Alexander I, member of the State Council (1821).

He distinguished himself in the Battle of Austerlitz when he seized the standard of the Fanagoria Regiment, striking at the enemy that was attacking Kamensky's brigade, thereby throwing the opponent into confusion; during the counterattack, two cannons were recaptured.

Upon his return, he was appointed manager of the Suite of His Imperial Majesty for quartermaster affairs (1810), and from that time on, P. M. Volkonsky became one of the leading figures in the Russian army.

At that time, this body became the Office of the Manager of the Suite of His Imperial Majesty (significantly expanded and transformed into the Main Staff in 1815).

Under his leadership, the responsibilities of the quartermaster officials in peacetime and wartime were urgently developed; regulations governing the service of quartermaster officers were drafted and approved; the officer staffing system of the Suite was organized; Suite officials were assigned to all armies, corps, and divisions; and, in collaboration with the Minister of War Barclay de Tolly, he developed the "Regulations for the Management of the Large Active Army."

In those years, the Russian army also owes the establishment of a column leader school, which became the basis for staffing the general staff, and the creation of a military-topographic map depot.

At his suggestion, Emperor Alexander I agreed to the retreat of Russian troops from the fortified camp near Drissa, which was poorly situated.

Together with Count (later Prince of the Most Serene and Field Marshal) M. S. Vorontsov, he was awarded the Grand Cross of the English Order of the Bath (1819).