Count Jan Stefan Krukowiecki (1772-1850) was a Polish general and chairman of the Polish National Government (prezes Rządu Narodowego) during the November Uprising and general during Napoleonic Wars fighting in the troops of Napoleon.

Jan Krukowiecki was born December 15, 1772 in Lwów. He studied at the Teresianum in Vienna and joined the Austrian army. He fought in the campaigns against the Turkish troops in the Balkans. In September 1794 Krukowiecki protested against the Austrian response to the Kościuszko Uprising and resigned his officer's commission. He spent the next 12 years in retirement.

1806 Krukowiecki joined the French army and fought in Napoleon's campaigns. In 1812 he was part of the Napoleon's army in the war against Russia. He was wounded in Smolensk and received the Legion of Honour, was promoted to general of brigade and took command of a cavalry brigade. At the battle of Leipzig he fought under general Sokolnicki but failed to secure the Halle Gate.

On March 1, 1814 Krukowiecki received command of the Polish guard of honor at Versailles. In 1814 Tsar Alexander I commissioned Krukowiecki to go to England because of his knowledge of the language. He was to secure the reparations of Polish prisoners of war. When he returned to Paris, he saw that his conduct in Leipzig was questioned in a public pamphlet. He sued general Sokolnicki, who had written the pamphlet under pseudonym, but lost.

Krukowiecki proceeded to report to Tsar and arrived in Moscow in February 1815 before he returned to Paris. On April 16 of the same year, during a banquet in honor of Russian and Polish officers, he stomped on Sokolnicki's toe. He was put into court martial but when Sokolnicki died in September 1816, Krukowiecki was just removed from the active army service. He returned to Poland.

In August 1831 Krukowiecki became head of Polish government during the November Uprising, but had to surrender Warsaw to the Russians in September and was sent to Siberia. When he returned to Poland, he was tried for treason but acquitted. Krukowiecki settled on his wife's estate at Popień, near Rogowo, where he died April 17, 1850.