Bienvenue may refer to: Fulgence Bienvenüe (1852–1936), French civil engineer largely known for construction of Paris underground railway Bienvenue, French Guiana, a town in French Guiana Bayou Bienvenue, a bayou in Louisiana Bienvenue was a 28-gun French warship launched in 1788. She was captured by the British in 1794 and renamed HMS Undaunted.