John Heffernan is a British actor. He has worked with the the Royal Shakespeare Company (RSC), the National Theatre, and the English Touring Theatre. He has appeared in films and television shows.

Filmography

• This Town — Commander Bentley
• 2023A Ghost Story for Christmas: Lot No. 249 — The Friend
• Becoming Elizabeth — Duke of Somerset
• 2022National Theatre Live: Much Ado About Nothing — Benedick
• 2021The Banishing — Linus
• 2021The Duke — Neddie Cussen
• Dracula — Jonathan Harker
• 2020Misbehaviour — Gareth
• 2019Brexit: The Uncivil War — Matthew Elliott
• 2019Forget Me Not — Jack
• 2019Official Secrets — James Welch
• 2017Cern and the Sense of Beauty — Narrator (voice)
• 2017Crooked House — Laurence Brown
• The Loch — Dr. Simon Marr
• The Crown — Lord Altrincham
• 2015Eye in the Sky — Major Harold Webb
• Jonathan Strange & Mr Norrell — Lascelles
• 2014Beyond the Pale — Captain Charles Shore
• Outlander — Brigadier General Lord Thomas
• 2013All This Can Happen — Narrator
• Murder on the Home Front — Zeigler
• Ripper Street — Ronald Capshaw
• The Hollow Crown — Francis
• Luther — Steven Rose
• 2010National Theatre Live: The Habit of Art — George
• 2008King Lear — Oswald
• Foyle's War — James Griffin
• 2002Red Alert: Hockeytown 3 — Narrator
• A Ghost Story for Christmas — The Friend
• Tomb Raider — David

Appearances as themselves (1)

• 2007Snakes on a Set: Behind the Scenes — Self