USS Constellation vs L'Insurgente, or the action of 9 February 1799, was a single-ship action fought between frigates of the French Navy and the United States Navy during the Quasi-War, an undeclared war that lasted from 1798 to 1800. The battle resulted in USS Constellation's capture of L'Insurgente, after an intense firefight in which both sides exchanged heavy broadsides and musket fire.

The Quasi-War was an undeclared naval war fought from 1798 to 1800 between the United States and the French First Republic, primarily in the Caribbean and off the East Coast of the United States.