Luc Urbain de Bouëxic, comte de Guichen, French admiral (d. 1790)
Luc Urbain du Bouëxic, comte de Guichen (June 21, 1712, Fougères, Ille-et-Vilaine – January 13, 1790, Morlaix) was a French admiral who commanded the French fleets that fought the British at the First Battle of Ushant (1778) and the Battle of Martinique (1780) during the American War of Independence.