Alunul River may refer to the following rivers in Romania:
Alunul, a tributary of the Cracăul Alb in Neamț County Alunul, a tributary of the Nechit in Neamț County Alunul, a tributary of the Sadu in Gorj County
See also Aluna River, a tributary of the river Șușița in Romania Aluniș River (disambiguation) Alunișu River (disambiguation)