This dissertation focuses on the theoretical debate around the problem of the individual in modernity from the perspective of the conjunction between politics and philosophy. It departs from the diagnosis presented by C. B. Macpherson s theory of possessive individualism, especially when it states that modern political societies have been structured by a conception of the individual characterized by possessive qualities. The dissertation aims to demonstrate how historically a theoretical-political struggle around this notion has taken place. Thus, in the first part, it is proposed that Étienne Balibar s reading of John Locke s philosophy, which is one of the foundations of the theory of possessive individualism, presents a critical renewal of such theory, since it clarifies that the conjunction between individual and property is not limited to political theory and property theory, but is embedded in metaphysical theory, structuring the very conception of individual consciousness. The second part of the thesis analyzes how contemporary theories of the transindividual - hypothesis first formulated by Gilbert Simondon - represent a contemporary counterpoint to this perspective on individuality, which, at the same time, differs from traditional critiques of individualism. This problematic is also analyzed through Balibar s reading, which offers to the theories of the transindividual a necessary political supplement that was not entirely present in the more strictly ontological versions. Moreover, by starting from Spinoza s philosophy, the Balibardian interpretation allows the identification of the formulation of an alternative conception on individuality contemporary to Locke. It is proposed that such conception is not based on possessive characteristics and establishes a horizon for the political imagination in light of contemporary political challenges.