- Country: West Germany
- Genres: Comedy, Drama, Romance
- Release: 1953-12-22
- Director: Harald Braun
- Writers: Thomas Mann , George Hurdalek , Hans Hömberg , Erika Mann
- Language: German
- Stars: Dieter Borsche , Ruth Leuwerik , Lil Dagover , Mathias Wieman , Rudolf Fernau , Paul Henckels , Günther Lüders , Paul Bildt , Heinz Hilpert , Herbert Hübner
- Runtime: 102 min
- Awards: 1 win & 1 nomination
- AKA: Koninklijke hoogheid (Netherlands the) , Königliche Hoheit , Kuninkaallinen korkeus (Finland) , Königliche Hoheit (Austria) , Królewska wysokość (Poland) , Sua Alteza Real (Portugal, Portuguese Republic) , Hans Kongelige Højhed (Denmark) , Königliche Hoheit , His Royal Highness
- Plot: Literary adaptation: An American heiress in Europe falls in love with a German prince, but he is required to marry someone else for reasons of state convenience.
- IMDB:tt0045980
His Royal Highness Cast · · · ALL
Harald Braun
Director
Dieter Borsche
Prinz Klaus Heinrich
Ruth Leuwerik
Imma Spoelman
Lil Dagover
Gräfin Löwenjoul
Mathias Wieman
Dr. Raoul Überbein
Rudolf Fernau
Großherzog Albrecht
Paul Henckels
Hofmarschall Bühl zu Bühl
Günther Lüders
Kammerdiener Neumann
Paul Bildt
Staatsminister von Knobelsdorff
Tilo von Berlepsch
Adjutant
Heinz Hilpert
Herbert Hübner
Kurt Vespermann
Anne-Marie Hanschke
Ewald Wenck