Martin Freeman

Arthur Dent

Yasiin Bey

Ford Prefect

Zooey Deschanel

Trillian

Sam Rockwell

Zaphod Beeblebrox

Alan Rickman

Marvin (voice)

Anna Chancellor

Questular Rontok

Bill Nighy

Slartibartfast

Richard Griffiths

Jeltz (voice)

John Malkovich

Humma Kavula

Helen Mirren

Deep Thought (voice)

Thomas Lennon

Eddie the Computer (voice)

Stephen Fry

Narrator / The Guide (voice)

Warwick Davis

Marvin

Bill Bailey

The Whale (voice)

Su Elliot

Pub Customer

Dominique Jackson

Fook

Simon Jones

Ghostly Image

Kelly Macdonald

Reporter

Ian McNeice

Kwaltz (voice)

Steve Pemberton

Mr. Prosser

Albie Woodington

Barman

Mark Longhurst

Bulldozer Driver

Jack Stanley

Lunkwill

Mak Wilson

Vogon Interpreter (voice)

Mark Gatiss

Additional Vogon Voices

Reece Shearsmith

Additional Vogon Voices

Mason Ball

Creature Performer

Sarah Bennett

Creature Performer

Danny Blackner

Creature Performer

Hayley Burroughs

Creature Performer

Cecily Fay

Creature Performer

Aron Freeman

Creature Performer

Ian Kay

Creature Performer

Nikki Bond

Creature Performer

Mohsen Nouri

Creature Performer

Oliver Parham

Creature Performer

Nigel Plaskitt

Creature Performer

Lynn Robertson Bruce

Creature Performer

Jerome St. John Blake

Vogon Soldier

Milo Bodrozic

Vogon Soldier

Martin Dawson

Vogon Soldier

Dan Ellis

Vogon Soldier

Steve Grindle

Vogon Soldier

Art Hewitt

Vogon Soldier

Simon Hibbs

Vogon Soldier

Rob Horseman

Vogon Soldier

Mike Lewis

Vogon Soldier

Paul Nathaniel

Vogon Soldier

Tim Perrin

Vogon Soldier

Jessie Riley

Vogon Soldier

Tucker Stevens

Vogon Soldier

Ashley Stuart

Vogon Soldier

Benjamin Uttley

Vogon Soldier

Patrick Walker

Vogon Soldier

Spencer Wilding

Vogon Soldier

William Wollen

Vogon Soldier

Edgar Wright

Deep Thought Technician (uncredited)

Jason Schwartzman

Gag Halfrunt (uncredited)

Mark Rhino Smith

Pall Bearer (uncredited)