This article introduces citizenship by investment as global citizenship. This refers to the direct sale of membership entitlements and immediate naturalization, creating formal legal and fragmented market citizenship. Factors in the globalization of citizenship law include a presupposition of plural (dual and multiple) citizenship, missing physical residence, reference to a supranational individual fundamental rights sphere, the idea of cosmopolitan membership qua humanity, philanthropy, markets, as well as actual claims to function as global citizenship. The article discusses various strands of global constitutionalism, including references to the self-entanglement of states and the joining of individuals and markets, within the privatization and globalization of public law. Utilizing complex systems theory, the article then creates an argument for global citizenship through the existence of global citizens as supranational non linear legal network authority overcoming market entropy.