Information and communication technologies (ICT) have affected all area in a society. Human can learn quickly and accurately from the internet. The aim of this study was to investigate what the problematic internet usage of ICT teachers. Therefore, the present study investigated the problematic internet usage, who worked as an ICT teacher in secondary schools in Turkey. The data collection tools of the study are "Personal Information Form" designed by the researcher, and Problematic Internet Usage Scale. Descriptive statistics, t-test, ANOVA and Pearson correlation test were used for the statistical analysis of the data. The sample group of this study comprised of 119 ICT teachers. At the end of the research, it was found that male ICT teachers received higher scores in problematic internet usage scale when compared to the female ICT teachers. Participants who had been serving as an ICT teacher for six years and more received higher scores in problematic internet usage level when compared to the other groups.