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.
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.)
Bob le Flambeur
(Police Commissary Ledru)
The Old Guard
(Le chauffeur de car)
Strange Tales
(The obsessed killer)
Smrt na Cukrovém ostrově
(Jean)
The Time of the Cherries
The Trump Card
Madame et le mort
Adieu Léonard
(Knife-grinder)
First in Line
(Warfield)
Florence is Crazy
((uncredited))
Farandole
Song of the Clouds
The Great Pack
(Me Frouas)
The Ideal Couple
(Operator)
Maigret Sees Red
(l'inspecteur Lognon)
Dreams of Love
(Hurau)
The Lost Village
Vire-vent
Captain Ardant
(Jossip)
The First Weapons
The House on the Dune
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
Scandal on the Champs-Élysées
(Pascaud)
Maigret Sets a Trap
(Mazet)
Les Assassins du dimanche
Police Judiciaire
Thérèse Étienne
The Girls of La Rochelle
The Nina B. Affair
(Lofting)
The Straight Line
Why Paris?
(Guest released from prison)
The Crime of Monsieur Lange
(Typesetter (uncredited))
Atomic Agent
The Last Penny
(Richard)
The House Under the Sea
(Lucien)
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
Bizarre, Bizarre
(le maquereau)
La dame de Noël