Danube was a 74-gun built for the French Navy during the first decade of the 19th century. Completed in 1809, she played a minor role in the Napoleonic Wars.
Designed by Jacques-Noël Sané, the Téméraire-class ships had a length of , a beam of and a depth of hold of . The ships displaced 3,069 tonneaux and had a mean draught of . They had a tonnage of 1,537 port tonneaux. Their crew numbered 705 officers and ratings during wartime. They were fitted with three masts and ship rigged.
The muzzle-loading, smoothbore armament of the Téméraire class consisted of twenty-eight 36-pounder long guns on the lower gun deck and thirty 18-pounder long guns on the upper gun deck. On the quarterdeck and forecastle were a total of sixteen 8-pounder long guns. Beginning with the ships completed after 1787, the armament of the Téméraires began to change with the addition of four 36-pounder obusiers on the poop deck (). Some ships had instead twenty 8-pounders.
Danube was ordered on 11 August 1806 and laid down on 1 June 1807 at the Arsenal de Toulon. The ship was launched on 21 December 1808, completed in August 1809 and commissioned on 28 August. Danube was recommissioned on 15 June 1810 by Captain Antoine Henry using the men from the 2nd Battalion of the Line ().
The ship became a training ship in 1882. Danube was struck and ordered to be broken up on 18 December 1826.