 Locke’s discussion of personal identity is central to the current debate over persons and their persistence conditions. Nevertheless, there are many different versions of Locke’s view that contemporary metaphysicians take themselves to be embracing or rejecting. Even those who describe their respective views as “Lockean”—Parfit and Olson, for instance—can end up defending very different pictures of persons. This highlights just how difficult it is to determine what Locke’s view on persons and their persistence conditions amounts to, despite how clear its importance is.