
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.

as Guest released from prison

as l'inspecteur Lognon

as Sir Basile

as Jean

as Lofting

as Coach driver

as Pageot

as Professeur de français

as Le chef de station de la R.A.T.P.

as Le libraire

as Rothlisberger

as Mazet

as Inspector Mercier

as Police Commissary Ledru

as Gustave, alcoolique, gardien de l'école communale

as Ll'inspecteur Leroy

as Mr. Léon

as Le père Mascle

as Jacques 'le Dingue'

as Emile Kortenwirth

as (voice)

as Le concierge

as Un inspecteur

as Jossip

as Émile

as The Obsessed Killer

as Roger

as Pascaud

as Justin

as Jean Pétrat

as Lucien

as Poulain

as Hurau

as un échevin

as Operator

as Richard

as Bénoni

as Denisot

as Me Frouas

as (uncredited)

as Warfield

as Knife-grinder

as Robert (uncredited)

as Aspirant

as Un joueur

as le maquereau (uncredited)

as (uncredited)

as Typesetter (uncredited)

as Le pasteur (uncredited)