Abstract: The subject of this research is the reception of the doctrine on the categories and fundamentals of I. Kant’s pure reason in of V. D. Kudryavtsev-Platonov’s teaching on cognition (later referred to as Kudryavtsev). The reception of Kant’s doctrine in Kudryavtsev's philosophy, despite the wide array of literature dedicated to the perception of Kant's ideas in religious-academic philosophy, yet has not been the subject of in-depth historical-philosophical analysis. This defined the goal of this research – establish the degree of Kudryavtsev's understanding of the doctrine on the categories and fundamentals of Kant's pure reason, as well as reveal the nature of reception of this doctrine in Kudryavtsev's philosophy. The scientific consists in introduction of the previously unpublished Kudryavtsev’s manuscript dedicated to the philosophy of Kant. The result consists in the position, according to which Kudryavtsev interpreted Kant's doctrine on the categories and fundamentals of pure reason in the three aspects: 1) the Russian philosopher familiarizes with Kant's theory; 2) he criticizes Kant's doctrine from the perspective of gnoseological realism, focusing particularly on the transcendental deduction of pure categories; 3) Kudryavtsev gives a positive assessment to Kant's apriorism and actively uses it in his own philosophical constructs. It is claimed that the phenomenon of Kudryavtsev's “critical perception” of the doctrine on the categories and fundamentals of Kant's pure reason testifies to not only critical attitude towards the German philosopher, but also that Kantian gnoseological ideas were actively used by Kudryavtsev for solution of his own philosophical tasks.