Helen Mirren Deep Thought (voice)
Bill Nighy Slartibartfast
John Malkovich Humma Kavula
Martin Freeman Arthur Dent
Sam Rockwell Zaphod Beeblebrox
Anna Chancellor Questular Rontok
Reece Shearsmith Additional Vogon Voices
Jason Schwartzman Gag Halfrunt (uncredited)
Alan Rickman Marvin (voice)
Thomas Lennon Eddie the Computer (voice)
Zooey Deschanel Trillian
Jemma Scott-Knox-Gore Contact Lens Technician
Warwick Davis Marvin
Stephen Fry Narrator / The Guide (voice)
Kelly Macdonald Reporter
Mark Gatiss Additional Vogon Voices
Bjørn Ole Schroeder ADR Supervisor
Edgar Wright Deep Thought Technician (uncredited)
Mark Rhino Smith Pall Bearer (uncredited)
Steve Pemberton Mr. Prosser
Jeffrey Chernov Production Executive
Jay Roach Producer
Richard Griffiths Jeltz (voice)
Laurie Sparham Still Photographer
Charlotte-Rose Armstrong Assistant Costume Designer
Simon Finney "A" Camera Operator
Yasiin Bey Ford Prefect
Ian McNeice Kwaltz (voice)
Bill Bailey The Whale (voice)
Mark Appleby ADR Recordist
Chris Lyons Special Effects Makeup Artist
Spike Jonze Thanks
Garth Jennings Director
Peter Gleaves ADR Mixer
Igor Jadue-Lillo Director of Photography
Karey Kirkpatrick Screenplay
Gary Barber Producer
Douglas Adams Novel, Screenplay, Executive Producer
Jack Stew Foley Artist
Duncan Jarman Prosthetic Makeup Artist
Spencer Wilding Vogon Soldier
John Gamble First Assistant Camera
Simon Jones Ghostly Image
Bobby Prince Unit Manager
Cecily Fay Creature Performer
Nathaniel De'Lineadeus Special Effects Makeup Artist
Ian Wilson Supervising Sound Editor
Su Elliot Pub Customer
Sunny Rowley Key Set Costumer
Eddie Knight Gaffer
Albie Woodington Barman
Jonathan Glickman Producer
Jim Dowdall Stunt Coordinator
Dean Clegg Assistant Art Director
Todd Arnow Co-Producer
Chris Rosewarne Propmaker
Marcia Ross Casting
Roger Birnbaum Producer
Diane Greaves Foley Artist
Joey Coughlin Electrician
Rosemary Burrows Costume Supervisor
Paul Gooch Makeup Artist
Mark Bakowski Digital Compositor
Ken Dailey Visual Effects Producer
Frank Walsh Supervising Art Director
Anita Dhillon Graphic Designer
Paul Edwards Steadicam Operator
Tony Currie ADR Editor
Andy Bennett Stunts
John Marzano Aerial Director of Photography
Michael Connell Supervising Music Editor
Tim Dean Libra Head Technician