Frasinu River may refer to:
Frasinu, a tributary of the Bistrița in Gorj County Frasinu, a tributary of the Cracăul Alb in Neamț County Valea Frasinului, a tributary of the Dâmbovița in Argeș County Frasinu, a tributary of the Lotrioara in Sibiu County
See also Frasinu (disambiguation) Frasin River (disambiguation) Frăsinet River (disambiguation)