- Author (The Three Musketeers):
- Alexandre Dumas
- Translated by (The Three Musketeers):
- Lord Sudley
- Adapted by (The Three Musketeers):
- Felix Felton
- Adapted by (The Three Musketeers):
- Susan Ashman
- Producer (The Three Musketeers):
- Rex Tucker
- Film sequences (The Three Musketeers):
- The BBC Television Film Unit
- Designer (The Three Musketeers):
- Richard Henry
- D'Artagnan:
- Laurence Payne
- Athos:
- Roger Delgado
- Porthos:
- Paul Whitsun-Jones
- Aramis:
- Paul Hansard
- George Villiers, Duke of Buckingham:
- John van Eyssen
- Patrick, his confidential servant:
- Will Leighton
- Jackson, his secretary:
- Stephen Hancock
- A jeweller:
- Erik Chitty
- Cardinal Richelieu:
- William Devlin
- Milady de Winter:
- Adrienne Corri
- Louis XIII, King of France:
- Garard Green
- Anne, Queen of France:
- Veronica Hurst
- M. de Treville:
- Laidman Browne
- Bonacieux:
- Arthur Lowe
- Constance Bonacieux:
- Clare Austin
- Rochefort:
- Ewen Solon
- Lord de Winter:
- Derek Aylward
- Planchet:
- Reginald Barratt
- Landlord of the Golden Lily:
- Christopher Hodge
- Madame de Lannoy:
- Margaret Gordon
- Other parts played by:
- Peter Diamond
- Other parts played by:
- Patrick Dowling
- Presenter (Vision On-Sound On):
- Rikki Fulton
- Producer (Vision On-Sound On):
- Kathleen Garscadden
- Producer (Vision On-Sound On):
- Noble Wilson
