Una River may refer to:

Una (Sava), a river in Bosnia and Croatia, tributary to Sava Una River (Pernambuco), in northeastern Brazil Una River (Paraíba), in northeastern Brazil In Bahia, eastern Brazil: Una River (Itaete, Bahia), a tributary of the Paraguaçu River Una River (Una, Bahia), a river that flows past the municipality of Una and empties into the Atlantic Ocean Una River (Valença, Bahia), a river that flows past the municipality of Valença and empties into the Atlantic Ocean Una River (Rio de Janeiro), in southeastern Brazil D'Una River, Santa Caterina, Brazil Una da Aldeia River, São Paulo, Brazil

See also Una (disambiguation)