Joseph Marie, comte Dessaix (24 September 1764, Thonon-les-Bains, Haute-Savoie – 26 October 1834) was a French general of the Napoleonic Wars.
He studied medicine, took his degree at Turin, and then went to Paris, where in 1789 he joined the National Guard.
He distinguished himself greatly at the battle of Wagram (1809), and was about this time promoted general of division and named Grand Officer of the Légion d'honneur, and in 1810 was made a count.
He took part in Napoleon's invasion of Russia, leading the 4th division of the I Corps (Grande Armée) under Davout, and was twice wounded.
[1] He joined Napoleon in the Hundred Days and was appointed to command the 23rd Division in Marshal Louis Gabriel Suchet's corps on the Savoy frontier.