Dick Van Dyke as Caractacus Potts

Sally Ann Howes as Truly Scrumptious

Lionel Jeffries as Grandpa Potts

Gert Fröbe as Baron Bomburst

Anna Quayle as Baroness Bomburst

Benny Hill as Toymaker

James Robertson Justice as Lord Scrumptious

Robert Helpmann as Child Catcher

Barbara Windsor as Blonde

Davy Kaye as Admiral

Alexander Doré as First Spy

Bernard Spear as Second Spy

Stanley Unwin as Chancellor

Peter Arne as Captain of Guard

Heather Ripley as Jemima Potts

Adrian Hall as Jeremy Potts

Desmond Llewelyn as George Coggins

Victor Maddern as Junkman

Arthur Mullard as Cyril, Big Man

Ross Parker as Chef

Gerald Campion as Minister

Felix Felton as Minister

Monti DeLyle as Minister

Totti Truman Taylor as Duchess

Larry Taylor as Lieutenant

Max Bacon as Orchestra Leader

Max Wall as Inventor

John Heawood as Inventor

Michael Darbyshire as Inventor

Kenneth Waller as Inventor

Gerald Taylor as Inventor

Richard Wattis as Secretary at Sweet Factory (Uncredited)

Phil Collins as Vulgarian Teen

Robert Arditti as Dancer (uncredited)

Vic Armstrong as Cavalry Guard at Cannon (uncredited)

Michael Audreson as Peter (uncredited)

Theo Aygar as 4th Minister (uncredited)

John Baskcomb as Castle Chef (uncredited)

Jimmy Berriman as Child in Castle (uncredited)

Eunice Black as Courtier (uncredited)

Bill Brandon as 'Test your Strength' Attendant (uncredited)

Phil Collins as Vulgarian Child (uncredited)

Tim Condren as Cavalry Guard (uncredited)

Sadie Corre as Field Worker (uncredited)

John Corrie as Soldier (uncredited)

John Crocker as Under Chef (uncredited)

Cyril Cross as Minister (uncredited)

Dan Darnelli as Man in the Sweet Factory (uncredited)

Gabrielle Daye as Lady-in-Waiting (uncredited)

Ernest Fennemore as Man at Fair (uncredited)

Harry Fielder as Soldier at Castle (uncredited)

Henry Gibson as Dancer (uncredited)

Carson Green as Urchin (uncredited)

Kay Hamilton as 3rd Duchess (uncredited)

Miranda Hampton as Scullery Maid (uncredited)

John Hicks as Boy (uncredited)

Robert Jenner as Field Worker (uncredited)

Nigel Kingsley as Child in Castle (uncredited)

Teddy Kiss Atom as Minor Role (uncredited)

George Leech as Chitty's original driver (uncredited)

Jim Machin as Child (uncredited)

Mary Maxfield as Lady at the Fair (uncredited)

Connel Miles as Dancer (uncredited)

Roy Murray as Fairground Barker (uncredited)

Grace Newcombe as 2nd Duchess (uncredited)

Dickie Owen as Major Domo (uncredited)

Paul Phillips as Soldier (uncredited)

Dido Plumb as Townsman (uncredited)

Colin Rix as Chauffeur (uncredited)

Jessie Robins as Pastry Cook (uncredited)

Richard Wattis as Secretary at Sweet Factory (uncredited)

Reg Thomason as Castle Guest (uncredited)