Héros was a 74-gun French ship of the line built at Rochefort from 1795 to 1801 by engineer Roland.

She was one of the numerous Téméraire class ships designed by Jacques-Noël Sané.

She took part in the French occupation of Santo Domingo, notably ferrying Toussaint Louverture to France after his arrest.

[2][3] She took part in the Battle of Trafalgar (21 October 1805) under Commander Poulain, and was one of the five French ships to survive the battle, although Poulain was killed at 13:15 and replaced by Lieutenant Conor.

[6] In the aftermath of the battle (28 October 1805), Jean Boniface Textoris, Chief Medical Officer of the French squadron, switched from the Bucentaur to the Héros to stay there until 21 April 1806 before passing on the hospital transport Achille.