Romuald Giedroyć (Lithuanian: Romualdas Giedraitis; French: Romuald Gedroitze; 7 February 1750 – 15 October 1824) was a Polish-Lithuanian prince from the princely Giedroyć family,[2] who fought in the Bar Confederation, War of 1792 and the Uprising of 1794 as part of the Grand Ducal Lithuanian Army.

From mid-1812 to early 1813, Giedroyć was also the commander of the Polish-Lithuanian regiments raised during the French invasion of Russia.

In 1815, Alexander I of Russia amnestied Giedroyć and made him a Lieutenant general of the Army of Congress Poland.

[3][4][5] When Stanisław August Poniatowski signed the Targowica Confederation, Giedroyć wrote a letter to the king demanding to be released from military service.

[2] On April 16 in Šiauliai, together with Antoni Prozor, Piotr Zawisza [pl] and Franciszek Niesiołowski, announced the first act of uprising in Lithuania.

[2][3] On April 18, Giedryoć with 200 cavalrymen advanced to Šatės [lt], where he fought against Kossakowski's regiment which supported the Russians.

[2][4] In the battle, he dealt a heavy defeat to the stronger Russian unit of Lieutenant General Sergei Fedorovich Golitsyn [ru].

[3][4] He went there together with Tadeusz Mostowski, both being part of the Polish Deputation [pl], committee that sought the support of the French government.

In the following days, this act was signed by several thousand people, and the signatures were collected at the home of Romuald Giedroyć.

[2] He was also the Inspector General of the Lithuanian regiments and Pospolite ruszenie formed for Napoleon's army.

[2][3][9][11] On 31 August 1812, General Van Hogendorp appointed him commander of the emerging Lithuanian military units.

He was part of the Army of Congress Poland with the rank of the Imperial Russian Divisional General.