Social network sites are widely used by many people nowadays for various aims. Many researches have been done to analyze the usage of these sites in many different settings. In the literature the number of the studies investigating the university students' usage social network sites is limited. This research was carried out to determine the social network sites usage of physical education and sports students for social and educational purposes. This research was carried out by using descriptive/survey method. The research was done at the School of Physical Education and Sport of Gazi University in Turkey. The participants of the study were comprised of 167 students who are attending the School of Physical Education and Sports of Gazi University. The data were collected by the researcher and analyzed by using several statistical techniques like t-test, Anova, frequency and percentage with SPSS program. according to the results of the study, most of the students who are attending the School of Physical Education and Sports think that social network sites can be used by university students for educational purposes effectively.