Kant (1724-1804) is one of the most important Western philosophers in the last three centuries. Through his cognitive views, it seems clear that he sees pure reason incapable of demonstrating the existence of the Creator, and so he resorts to practical reason. Hence, we can consider Kant as one of the most prominent and influential scholars concerning the knowing of God in Western Philosophy. Although the schools of thought that deny the role of reason in the recognition of God have shown their views according to their own foundations and fundamentals, but given the apparent influence of Kant in the history of the new philosophy of the West and the importance of his philosophy in the field of epistemology, especially the role of reason in the knowing of God, this article has focused on Kants ideas regarding the role of reason for knowing God, using the descriptive-analytical approach.