Given the negative externalities of the traditional productive system, sustainable development has become a productive alternative that attempts to improve the quality of life of present and future generations. The aim of this research was to understand the degree of perception and knowledge of sustainability of university students attending different courses, who represent future Argentinian professionals. A survey was conducted on a representative sample of those enrolled in the faculties of Agricultural, Economic, and Social Sciences of the National University of Lomas de Zamora, Buenos Aires. The results showed that, in terms of awareness, the environmental dimension of sustainability stands out above the others. Sustainability involves preserving natural resources, favoring biodiversity, reducing environmental risks, and finding a balance between the development of humanity and care for the environment. Only 10% of the respondents identified the three sustainability dimensions contemporaneously, and most of these individuals were not informed through university courses. No substantial differences were found in the knowledge of sustainability among students of different faculties. Universities, as trainers of professionals and leaders, should further develop the subject in their curricula, to improve knowledge of sustainability, so that graduates can better face future professional challenges. Similarly, students should strive to know about sustainability and its components to defend and improve it in all areas of work.