Librarianship is born the library practice, its origins are marked by the social need for the existence of public libraries and its transition to become a scientific discipline, iIt has been characterized by a permanent obligation of theoretical and methodological renewal that responds to scientific changes and global trends in technoscience. This text presents a theoretical and philosophical proposal that takes up the epistemologies of the south. First, the impact and influence of the dominant paradigm of science (realism) in library science is evaluated. And then, the elementary theoretical foundations are reviewed: language, information, knowledge, document and library in a southern key. Finally, the proposal of philosophical foundation for a librarianship from Abya-Yala is exposed