___________________________________________________________  Muhammet Özdemir Mersin Üniversitesi, İlahiyat Fakültesi, Felsefe ve Din Bilimleri Bölümü 33100, Mersin, Türkiye muhammetozdemir2012@gmail.com Beytulhikme An International Journal of Philosophy Beytulhikme Int J Phil 14 ( 3 ) 2024 Doi: 10.29228/beytulhikme.75668 Research Article: 775-791 ___________________________________________________________ 21. Yüzyılda Özne Felsefelerinin Anlamı ve İşlevi Nedir? ___________________________________________________________ What are the Meaning and the Function of Subject Philosophy in the 21st Century? MUHAMMET ÖZDEMİR Mersin University Received: 14.03.2024Accepted: 26.09.2024 Abstract: This study discusses the problematic framework and function of sub- ject philosophies, which are in question again due to the global Second Cold War conditions, the concept of post-truth and the hesitations of developing eco- nomic societies. Based on the criticisms of Ram Roy Bhaskar and Jean-François Lyotard, the idea that the subject can only reach the possibility of social reality, reciprocity and logical verification in its own ecosystem and ecology is devel- oped. The declarations of postmodernism and post-structuralist philosophy that grand narratives or meta-discourses are over should be accepted in the sense that the subject can only speak by moving from his own personal life and the social environment that he can physically touch. The logic of globalization and individ- ualization, which emphasizes inclusion and differences, operates commercially. Here, the human subject is not sure of his economic, psychological and legal se- curity, and may have difficulty in choosing a role for himself in society. Thus, it is stated that it is not functional and useful for the philosophical subject to talk about concepts that are outside of his own existence and that he cannot directly experience. The framework of subject philosophies between 2024 and 2050 will largely be formed within each subject's own ecosystem and ecology and around not very complex problems. Keywords: Subject, second cold war, post-truth, meta-discourses, social reality.