Cognomen Gwennael (Gwennael 
) , throughout the world, is a very rare family name. The cognomen Gwennael is habitual in France, where it is a very rare surname, and the United States, where it is an extremely rare surname. More prevalently, Gwennael is the forename as well as the last name.
Don, Thomas, Fedder, Feddal, Moginot, Salinas, Caignaert, Crochet, Dewildt, Guillot, Gentric, Launeau, Fossiez, Wodling, Quenton, Beirnaert, Deshaies, Diverrez, Gantheil, Tallonneau, Passemart, Deschamps, Tanguy, Lhomme, Lozach, Lepage, Adam, Buon, Rhun, Jean, Vase, Monce, Moron, Mvogo, Anton, Conan, Heurtebize, Comte, Babin, Bouin, Romac, Roels, Ruffy, Martin, Menard, Steurs, Berger, Buchet, Ciota, and Mathieu-Tanguy