The present invention relates to fungicidal N-cycloalkyl-N-{[2-(1-substitutedcycloalkyl)phenyl]methylene} carboxamide derivatives and their thiocarbonyl derivatives, their process of preparation and intermediate compounds for their preparation, their use as fungicides, particularly in the form of fungicidal compositions and methods for the control of phytopathogenic fungi of plants using these compounds or their compositions.