The Fifth Musketeer
- taona: 1979
- Firenena: Austria, United States of America
- Genre: Action, History
- Studio: Sascha-Verleih
- Keyword: plan, mistake in person, royalty, twins
- tale: Ken Annakin
- Cast: Beau Bridges, Sylvia Kristel, Ursula Andress, Olivia de Havilland, Ian McShane, Cornel Wilde