The paper presents an analysis of the results of the research of volunteering of students of the University of Zagreb and Technical and Social Sciences Polytechnics in Zagreb conducted between 2006-2007 within the international comparative research of students in 14 countries of the world. The aim of the research was to collect the data on various aspects of volunteering (experience, basic forms, motivations and benefits of volunteering, values connected with volunteering), and especially to gain insight into international differences. Considering the fact that the paper in particular focuses on the Croatian results, they have shown that the Croatian students, alongside with the Japanese students, are trailing behind all analysed countries. When they volunteer, students in general do it irregularly and informally, and they do most volunteer work for neighbourhood group or local activist organization, in homes for the elderly and the infirm, shelters and similar organisations. Intrinsic reasons for volunteering are emphasised the most, but the instrumental ones complement them. The research has also shown that volunteering is mostly not promoted through the system of education, and that the students consider such initiatives to be useful. The research results are compared with the results of research of volunteering in Croatia to date, and are interpreted within the analysis of civil society development in Croatia and other post-communist countries, and the differences between the countries are commented.