The Bucentaure class was a class of 80-gun French ships of the line built to a design by Jacques-Noël Sané from 1802 onwards, of which at least 29 were ordered but only 21 ships were launched.

As built, the first two ships of this class carried the same 80-gun armament as their predecessors of the Tonnant class - thirty 36-livre guns on the lower deck, thirty-two 24-livre guns on the upper deck, and eighteen 12-livre guns plus six 36-livre obusiers (howitzers) on the spar deck above (the French livre was about 8% greater than the British pound weight, so that 12 livres almost equaled 13 British pounds, and the 36-livre round equated to 38lbs 13.6oz).

Under the 1806 règlement, the spar deck ordnance was altered to fourteen 12-livre guns plus ten 36-livre carronades.

A further ship to this same design was begun as Saturno in May 1812 at Venice, and was renamed Emo by the Austrians following their seizure of that city, but was broken up on the stocks in 1818–19.

Finally a further ship of this class was ordered in 1812 at Rochefort, but was never laid down or even assigned a name.