Cauderlier is the name of the landlord of Alice Avril in the second seanotson of the series ''Les Petits Meurtres d'Agatha Christie. He has a running battle with Alice through the series trying to collect arrears in rent.
Cauderlier makes an "appearance" in episode 10 Mademoiselle Mac Ginty est morte. He is not actually seen, but only heard knocking on Alice's door, telling her that her neighbours have complained about the noise and reminding her about her arrears in rent. Cauderlier is portrayed by Francois Caccivio.
In Meurtres en solde, the address of his apartment block is given as 5, rue du Cirque, an actual location in the old city quarter of Lille.