The purpose of this study was to investigate relationship between rate of internet use and the type of its use with academic performance of the students in Islamic Azad University of Zanjan. To reach this goal, in addition to theoretical studies and investigating research literature, data were collected by a researcher-made questionnaire. Experts approved the validity of the questionnaire and the reliability was estimated by Cronbach Alpha 0/88. The statistical population consisted of 12,309 Islamic Azad University undergraduate students, 364 people of whom were selected as the sample based on Cochran formula and through stratified random sampling method. The research method was an applied one in terms of purpose, and a correlation one as far as data gathering is concerned. Data analysis was performed through descriptive and inferential statistics. The results showed that there was a positive correlation between internet use and academic performance of undergraduate students in Islamic Azad university of Zanjan. In addition, there was a positive correlation between the way to use internet in three aspects, that is, recreational, communicational, and educational aspects and the academic performance of the students.
