USS Duc de Lauzun was an armed transport vessel of 20 guns that served the Continental Navy from 1782 when she was bought until 1783 when it was sold in France.

Formerly a British customs ship, USS Duc De Lauzun was purchased in October 1782 at Dover, England, and outfitted in Nantes, France.

Clearing Havana 6 March escorted by the Continental ship Alliance under the command of Captain John Barry, she sailed for home with her precious cargo.

Barry witnessing the events, and the fact that Green was one of his closest friends, turned Alliance to come to Duc de Lauzun's assistance.

Barry, still insistent on following orders, left Green and Duc de Lauzun, still laden with a fortune of much needed goods.

In April 1783 the United States government lent Duc de Lauzun to France to carry home French troops.

On 21 April 1783, Congress instructed Robert Morris to arrange for the sale of Duc De Lauzun when she arrived in France.