In this thesis, we aim to explore the politics of the event and transindividuality to reflect on contemporary politics and the processes of subjectification and individuation involved therein. To achieve this, we reconstruct Gilbert Simondon s ontologies of individuation and Gilles Deleuze s concept of the event, both of which provide foundational contributions to this discussion. Centered around these core ideas, we draw on Spinoza s ontology of affect, as interpreted by Étienne Balibar, along with the ontologies of inter-cerebral cooperation in Gabriel Tarde and the image in Henri Bergson, analyzed by Maurizio Lazzarato. Balibar and Lazzarato serve, in this project, as mediators between these ontologies and the current political context. Through this constellation of authors, we seek to outline the conditions for a new practice of resistance and political action that counters the dominant liberal subject, rooted not in the conscious action of a rational agent, but rather in the affective dimension of the individual viewed as a production operation. In the first part of the thesis, we delve into Simondon’s ontology of transindividuality and its contemporary interpretation by Balibar. In the second part, we proceed similarly, presenting Deleuze s ontology of the event through his theory of multiplicities and its adaptation into the politics of the event in Lazzarato s work.