Marengo was a Téméraire class 74-gun ship of the line of the French Navy.

On 5 January, she collided with the Tourville off Brest.

In November 1814, under René Lemarant de Kerdaniel, she took part in the French repossession of Guadeloupe and Martinique.

She took part in the Invasion of Algiers in 1830, and in the Battle of the Tagus under Captain Maillard Liscourt the next year.

She was struck on 21 July 1858 and was used as a prison hulk from 1860 to 1865.