This book defends the controversial view that Nietzsche is a metaphysician against a long-standing tendency to sever Nietzsche from metaphysical philosophy. Remhof presents a metametaphysical treatment of Nietzsche's writings to show that for Nietzsche the questions, answers, methods, and subject matters of metaphysical philosophy are not only perfectly legitimate, but also crucial for understanding the world and our place within it. The book examines aspects of Nietzsche's thought that have received little attention in the literature, including his view of what makes metaphysics possible; his metaphysics of science; his naturalized metaphysics; how he appeals to the intuitions of readers; how he employs a priori reasoning; how he uses metaphysical grounding explanations; and how metaphysics is intertwined with topics central to his philosophical thinking, including his understanding of becoming, ethics, nihilism, life, perspective, amor fati , and eternal recurrence. Nietzsche as Metaphysician will be of interest to scholars and advanced students working on Nietzsche and the history of metaphysics.