Kantianism refers to a branch of philosophy that follows the works of Immanuel Kant who believed that rational beings have dignity and should be respected. (noun)
A philosophy of rational morality including God and freedom, based on the works of Kant, is an example of Kantianism.
See Kantianism in Webster's New World College Dictionary
noun
the philosophy of Kant, who held that the content of knowledge comes a posteriori from sense perception, but that its form is determined by a priori categories of the mind: he also declared that God, freedom, and immortality, although they cannot be proved or disproved, are necessary postulates of a rational morality