Henryk Dembiński (1791‑1864) was a Polish engineer, traveler and general.

Dembiński was born January 16, 1791 in Strzałków near Kraków. In 1809 he entered the Army of the Duchy of Warsaw and took part in most of the napoleonic campaigns in the East. Among others, he took part in the Battle of Leipzig in 1813. After the fall of Bonaparte he remained in Poland and became one of the members of the Sejm of the Congress Kingdom.

In the Polish November Uprising of 1830, he was a successful leader of the Polish forces. In 1831, after his victorious campaign in Lithuania, he was promoted to generał dywizji and for a brief period became the Polish commander-in‑chief. He took part in the battles of Dębe Wielkie and Ostrołęka .

After the fall of the revolution in 1833 he emigrated to France, where he became one of the prominent politicians of the Hôtel Lambert, a group of supporters of Adam Jerzy Czartoryski.

In the 1848 Hungarian insurrection, he was appointed the commanding officer of the Northern Army. After his successes he was soon promoted and Lajos Kossuth appointed him the Hungarian commander-in-chief. He was hampered by the jealousy of Gorgei and after the defeat of Kapolna, he resigned. After the Battle of Temesvar and Kossuth's resignation, he fled to Turkey, where he (together with many other prominent Polish officers) entered the service of sultan Mahmud II. However, in 1850 he returned to Paris, where he died July 13, 1864.