Guy Decomble

Guy Decomble (1910–1964) was a French film and television actor. A character actor he played in a number of supporting parts in postwar cinema. One of his better known roles is as the teacher in The 400 Blows by François Truffaut.
Cast

The 400 Blows
French Teacher

The Cousins
Le libraire

Jour de Fête
Roger

The Magnificent Tramp
Le chef de station de la R.A.T.P.

The Old Guard
Coach driver

Bob le Flambeur
Police Commissary Ledru

Unusual Tales
The Obsessed Killer

Smrt na Cukrovém ostrově
Jean

The Time of the Cherries
Unknown

The Trump Card
Aspirant

Madame et le mort
Unknown

Adieu Léonard
Knife-grinder

First in Line
Warfield

Florence is Crazy
(uncredited)

Song of the Clouds
Unknown

Farandole
Unknown

The Great Pack
Me Frouas

The Ideal Couple
Operator

Maigret Sees Red
l'inspecteur Lognon

Dreams of Love
Hurau

The Lost Village
Jean Pétrat

Vire-vent
Justin

Captain Ardant
Jossip

The First Weapons
Émile

The House on the Dune
Unknown

The Case Against X
Le concierge

The Solitary Conquerors
(voice)

Follow That Man
Emile Kortenwirth

The Aristocrats
Gustave, alcoolique, gardien de l'école communale

This Man Is Dangerous
Jacques 'le Dingue'

Hanged Man's Farm
Bénoni

Black Dossier
Ll'inspecteur Leroy

We Are All Murderers
Un inspecteur

The Wreckers
Unknown

Scandal on the Champs-Élysées
Pascaud

Maigret Sets a Trap
Mazet

Les Assassins du dimanche
Unknown

Police Judiciaire
Inspector Mercier

Thérèse Étienne
Rothlisberger

The Girls of La Rochelle
Sir Basile

The Nina B. Affair
Lofting
The Straight Line
Unknown

Why Paris?
Guest released from prison

The Crime of Monsieur Lange
Typesetter (uncredited)

Atomic Agent
Pageot

The House Under the Sea
Lucien

The Last Penny
Richard

Homeland
un échevin

The Unfrocked One
Le père Mascle

Forfaiture
Un joueur

François Villon
Denisot

Dangerous Turning
Mr. Léon

The Chips Are Down
Poulain

It's in the Bag
Le pasteur (uncredited)

Le Voyageur de la Toussaint
Robert (uncredited)

Guinguette
Unknown

Bizarre, Bizarre
le maquereau (uncredited)

La dame de Noël
Unknown
Le Cœur révélateur
Unknown

The Citadel of Silence
(uncredited)