- Author:
- William Shakespeare
- Director:
- Douglas Seale
- Music:
- Christopher Whelen
- Music played by:
- The Shakespeare Memorial Theatre Orchestra
- Conductor:
- Harold Ingram
- Radio adaptation/Production:
- Norman Wright
- King John:
- Robert Harris
- Chatillon, ambassador from France:
- Peter Cellier
- Queen Elinor, mother to King John:
- Molly Tapper
- The Earl of Essex:
- Antony Brown
- Philip the Bastard:
- Alec Clunes
- Robert Faulconbridge, his half-brother:
- James Wellman
- Lady Faulconbridge:
- Stephanie Bidmead
- Lewis, the Dauphin:
- Barry Warren
- Arthur, Duke of Bretagne, nephew to King John:
- Christopher Bond
- Lymoges, Duke of Austria:
- Clive Revill
- Constance, mother to Arthur:
- Joan Miller
- King Philip of France:
- Cyril Luckham
- Blanch of Spain, niece to King John:
- Doreen Aris
- A citizen of Angiers:
- Patrick Wymark
- A French herald:
- Thane Bettany
- An English herald:
- Peter Palmer
- The Earl of Salisbury:
- Donald Eccles
- Cardinal Pandulph, the Pope's Legate:
- Mark Dignam
- Hubert:
- Ron Haddrick
- An executioner:
- Julian Glover
- The Earl of Pembroke:
- Robin Lloyd
- A messenger:
- Derek Mayhew
- Peter of Pomfret, a prophet:
- William Eimhirit
- The Lord Bigot:
- Donald Layne-Smiih
- Melun, a French lord:
- Toby Robertson
- A French soldier:
- John Murray Scott
- Prince Henry, son to King John:
- Gordon Wright
- Narrator:
- Henry Davies
- Other parts played by:
- Mavis Edwards
- Other parts played by:
- Elizabeth Evans
- Other parts played by:
- Pamela Taylor
- Other parts played by:
- Robert Arnold
- Other parts played by:
- Edward Caddick
- Other parts played by:
- Simon Carter
- Other parts played by:
- John Davidson
- Other parts played by:
- Kenneth Gilbert
- Other parts played by:
- John Grayson
- Other parts played by:
- Norman Miller
- Other parts played by:
- Rex Robinson
- Other parts played by:
- John Salway
- Other parts played by:
- Gordon Souter
- Other parts played by:
- Roy Spencer
