The Fifth Musketeer is a 1979 German-Austrian film adaptation of the last section of the 1847–1850 novel The Vicomte of Bragelonne: Ten Years Later by Alexandre Dumas, père, which is itself based on the French legend of the Man in the Iron Mask.

It was directed by Ken Annakin, and stars Beau Bridges as the twins (Louis XIV and Philippe of Gascony), Sylvia Kristel as Maria Theresa, Ursula Andress as Louise de La Vallière, Cornel Wilde as d'Artagnan, Ian McShane as Fouquet, Rex Harrison as Colbert (Philippe's tutor), and Lloyd Bridges, José Ferrer and Alan Hale Jr. as the Three Musketeers.

It was felt this was due in part in the financial failure of another movie made by the Austrian production company, Sacha-Wien Films, A Little Night Music.

[1][4] Vincent Canby of The New York Times wrote, "Though 'The Fifth Musketeer' is loaded with intrigue, duels, large scale swordplay, heavy costumes and heavier décor, it is singularly without style or even excitement.

"[7] Dale Pollock of Variety stated that the film "adds nothing new to the genre, deriving its inspiration totally from the 1939 United Artists release written by George Bruce, who is credited here along with Dumas", adding that director Ken Annakin "stifles 'The 5th Musketeer' with ornate production values, deadly earnest swordplay and dialog as moth-eaten as the peasant costumes.

"[9] Kevin Thomas of the Los Angeles Times wrote, "There are some nice moments along the way from a largely nostalgic cast and some reasonably sumptuous settings, with the Schoenbrunn Palace standing in for Versailles.

"[11] In his 2001 autobiography, So You Wanna Be A Director?, Annakin agreed with the criticisms of the film, feeling he had not done a good job with the actors (in particular Andress and Kristel), as well as not translating the script to screen effectively.