Sean Arnold (30 January 1941 – 15 April 2020) was an English actor.
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- 1980 - Black Coffee (Windsor Theatre Company production) as Captain Arthur Hastings OBE
- 1981 - The Unexpected Guest (BBC World Service) as Julian Farrar
- 1983 - Peril at End House (Windsor Theatre Company production) as Captain Hastings
- 2000 - Peril at End House (BBC Radio 4) as Jimmy Lazarus
- 2005 - The Mysterious Affair at Styles (BBC Radio 4) as John Cavendish