The Red River plays a critical role as a spine of historical and cultural life of Ha Noi, the millennium-civilized capital, as well as of the entire Tonkin Delta. The river’s truck stream flowing through Ha Noi and its branching distributaries spread out to form a fertile delta: the Red River Delta. Until now this river has made its appearance with a variety of nominal terms in historical records and folkloristic traditions. Due to the river’s great importance to the Vietnamese community, its names present more or less clear reflections of cultural traces belonging to the generator of these terms