Jean Barthélemy Claude Toussaint Darmagnac (French pronunciation: [ʒɑ̃ baʁtelemi klod tusɛ̃ daʁmaɲak]; 1 November 1766 – 12 December 1855) became a French division commander during the Napoleonic Wars.

He participated in the French campaign in Egypt and Syria, being promoted to lead the regiment after distinguishing himself at the Battle of the Pyramids.

Going to Spain, he was wounded at Medina de Rioseco and became a general of division in 1808.

After serving as provincial governor in Old Castile, where he plundered many works of art, especially in Burgos, he assumed command of a combat division at Vitoria, the Pyrenees, the Bidassoa, the Nivelle, the Nive, Orthez, and Toulouse.

His surname is one of the names inscribed under the Arc de Triomphe in Column 36.