This final thesis represents the issue of stigmatization of people with mental disorders with special emphasis on stigmatization by social work students as future professionals in the field of mental health. On this occasion, a survey was conducted on 115 students of the Social Work Study Center, Faculty of Law in Zagreb. The aim of the research was to examine the differences in the level of stigmatization of people with mental disorders among social work students, considering the level of education and social contact with the said population. Considering that students attend various courses during their studies and carry out practical classes that accumulate knowledge and experience in the field of mental health, an effort was made to check whether there are differences in attitudes towards people with mental disorders between students who have just started studying, that is, those in the first year of undergraduate studies and those in the final year of studies, i.e. in the first year of graduate studies. Also, differences in attitudes regarding whether respondents had previous social contact with people with mental disorder were examined. The obtained results are mostly in accordance with previous research and findings, so a lower level of stigmatizing attitudes was observed among students in the first year of graduate studies, as well as among students who reported that they had social contact. But only through work, volunteering or visiting institutions, associations or other organizations that take care of people with mental disorders, and not through connections in their immediate environment. It is concluded that there is room for improvement and it can be achieved by improving the curriculum and practical classes.