Many libertarians believe that self-ownership is a separate matter from ownership of extra-personal property. “No-proviso” libertarians hold that property ownership should be free of any “fair share” constraints (e.g., the Lockean Proviso), on the grounds that the inability of the very poor to control property leaves their self-ownership intact. By contrast, left-libertarians hold that while no one need compensate others for owning himself, still property owners must compensate others for owning extra-personal property. What would a “self” have to be for these claims to be true? I argue that both of these camps must conceive of the boundaries of the self as including one's body but no part of the extra-personal world. However, other libertarians draw those boundaries differently, so that self-ownership cannot be separated from the right to control extra-personal property after all. In that case, property ownership must be subject to a fair share constraint, but that constraint does not require appropriators to pay compensation. This view, which I call “right libertarianism,” differs importantly from the other types primarily in its conception of the self, which I argue is independently more plausible.