A significant portion of recent literature on Nietzsche is devoted to his metaethical views, both critical and positive. This article explores one aspect of his positive metaethics. The specific thesis defended is that Nietzsche is, or is plausibly cast as, a reasons internalist. This, very roughly, is the view that what an agent has normative reason to do depends on that agent's motivational repertoire. Section I sketches some of the metaethical terrain most relevant to Nietzsche's organising ethical project, his “revaluation (...) of all values”, and lays out three “design-requirements” that an adequate account of Nietzsche's metaethical views must satisfy. Section II introduces the basic internalist position. Sections III–IV provide textual support for the internalist reading of Nietzsche, with Section V showing how it meets each of the design-requirements. Section VI concludes by showing how the internalist apparatus also illuminates Nietzsche's views about the process of revaluing values. (shrink)