His Royal Slyness
- Godina: 1920
- Country: United States of America
- Žanr: Comedy
- Studio: Rolin Films
- Ključna riječ: dual identity, prince, salesman, identity swap
- Direktor: Hal Roach
- Uloge: Harold Lloyd, Mildred Davis, Harry 'Snub' Pollard, Gus Leonard, Noah Young, Roy Brooks