Kant’s ethics has played a prominent role in discussions about the nature and scope of morality, moral obligation, and moral rightness since the publication of its first systematic expression in Kant’s Groundwork of the Metaphysics of Morals in 1785. Although eclipsed in popularity by the utilitarian moral theory that flourished in the late nineteenth and early twentieth centuries, Kant’s views have remained a constant source of inspiration and debate for contemporary moral and political theorists. By highlighting some of the most significant developments in the field of Kantian ethics during the past seventy years, this chapter aims to reaffirm Kant’s pride of place as one of the most influential moral theorists in the history of philosophy.