Guanabacoa (gwänäbäkōˈä) [key], municipality (1986 est. pop. 95,500), Ciudad de La Habana prov., W Cuba, a residential and commercial suburb of Havana. Numerous mineral springs are located near Guanabacoa, whose Native American name means "place of waters." The city was founded in 1555 on the site of a Native American settlement.