The Blue Danube is a 1928 American silent romantic drama film starring Leatrice Joy.

Due to the public apathy towards silent films, a sound version was also prepared.

This picture was produced by Cecil B. DeMille and directed by Paul Sloane with a distribution through Pathé Exchange.

The sound version featured a theme song entitled “Moonlight on the Danube” which was composed by Byron Gay.

A print of The Blue Danube is preserved at the Library of Congress, Archives Du Film Du CNC(Bois d'Arcy), BFI National Film And Television Archive.