Pluton was a Téméraire class 74-gun French ship of the line built at Toulon.

She was one of two prototypes for a derivative sub-class of the original design; this sub-class (slightly smaller than the primary design) was specially intended for construction in some of the shipyards in states occupied by the French, where there was less depth of water than in the main French shipyards.

The Pluton took part in the Battle of Trafalgar under Captain Julien Cosmao-Kerjulien, and escaped to Cádiz with other ships.

Two days later, on 23 October 1805, she was the flagship of the counter-attack from Cádiz, together with Indomptable, Neptune, Rayo and San Francisco de Asis.

She was captured by Spain in Cadiz on 14 June 1808 and commissioned in the Spanish Navy as Pluton.