Abstract : Internet Addiction (IA) among medical students and its involvement with psychological distress can affect their academic progress and long-term career targets. IA would also subtly impact community of health care professionals and the people. To verify the rate and levels of internet addiction (IA) among students according to Internet addiction test (IAT). As well as to find out the influence of gender and school year on the likelihood of development IA. A cross-sectional study was performed among students of college of medicine -Al- Mustansiriyah University, Iraq. The data was collected via self-report questionnaire and IA Test (IAT) was exploited to assess IA. The total number of students enrolled in the study was 418 students. The rate of IA among study group was (81.8%), 55% of them met the criterion for mild addictive internet use. Males and females have approximately same rate of IA (81.5% and 82%) respectively. The highest rate of IA and sever level of addiction (92.3%, 5.9 %) were detected among third grade students. Social media browsing was the main purpose for internet use (42.8%). Most of the students (90%) used mobile phones for Internet access.98.32% of the students enrolled in the study had face book account and 72% of students spend more than 3 hours on internet daily. Internet addiction has become a common problem among medical students. Students need to be counseled about the threats of internet addiction