Gradignan is a commune in the Gironde department in southwestern France. It is a suburb of the city of Bordeaux and is located on its sou…Gradignan is a commune in the Gironde department in southwestern France. It is a suburb of the city of Bordeaux and is located on its southwest side. Thus, it is a member of the Bordeaux Métropole. Gradignan is a part of the Bordeaux education zone.