Jean Henri Joseph Dupotet (French pronunciation: [ʒɑ̃ ɑ̃ʁi ʒozɛf dypotɛ]; 17 December 1777, in Chaugey – 9 January 1852, in Paris) was a French navy commander who participated in the Battle of Trafalgar as a young lieutenant and later became a vice-admiral.

Dupotent distinguished himself on 7 August 1795, when the squadron of Alceste attacked and captured the 74-gun HMS Berwick.

Upon his return, he was promoted to lieutenant, and served as second in command aboard the Redoutable, taking part in the Battle of Trafalgar.

Released after the battle, he was promoted to frigate captain and served as an aid to Denis Decrès.

In 1809, he took command of the 44-gun Niémen, bound for Bordeaux, only to run into a British frigate squadron blockading Brest.