The aim of the present study is to examine the internet addiction levels of university students in terms of the state of doing sport and different variables. A total of 300 students, 132 male and 168, studying in Samsun Ondokuz Mayis University participated in the study. Internet Addiction Scale which was developed by Günüç and Kayri (2010) and which had four sub-dimensions (withdrawal, controlling difficulty, disorder in functionality and social isolation) was used. SPSS 22.0 program was used for the statistical analysis. Significance was found in the sub-dimensions of withdrawal and social isolation in terms of the variable of gender (p<0.05) and in the sub-dimension of social isolation in terms of the variables of faculty and the state of doing sport regularly (p<0.05). It can be seen that internet addiction levels were similar in all sub-dimensions except for social isolation, while they were found to be different in the sub-dimension of withdrawal in terms of the variable of gender. This result is thought to be associated with the fact that students who do sport regularly and those attending sport sciences faculty are not exposed to social isolation due to sport and that they lead more social lives when compared with the students of other faculties. In terms of the variable of gender, it is thought that the reason why female students had higher withdrawal levels can be due to the fact that men can act more comfortably in social life.