Purpose: This study aimed to determine the relationship between the level of problematic internet use of adolescents and their level of satisfaction with family life. Method: The research was conducted in a cross-sectional descriptive design. 508 volunteer students from among the students studying at the high schools in Yozgat city center participated in the research which was carried out in the 2021-2022 academic year.. Data were collected through Google Forms questionnaires sent to students' smartphones. Results: The results of the analysis revealed a significant negative relationship between the problematic internet use of adolescents and their level of satisfaction with family life. Accordingly, a significant difference was determined between the variables of family income, academic achievement, father's educational background and father's child-rearing attitudes and problematic internet use. Furthermore, a significant difference was determined between the variables of academic achievement, parents’ living together, father's educational background, father's working status, family's economic income and the level of satisfaction with family life. Conclusion: In this study, the significance of the family with regard to the development of adolescents as healthy internet users was emphasized; it was suggested that preventive, protective and educational studies should be carried out and that the use of different methods, including other possible predictors, should be included in follow-up studies.