Abstract. The accelerating development of digital technologies and the greater availability of the Internet lead to the fact that some users are immersed in virtual space so densely that it results in Internet addiction. Most of the studies of Internet addiction have been conducted on schoolchildren and students. However, the question of studying this phenomenon on the generation Y sample remains open. Aim: the paper aims to identify the individual psychological traits of Internet addicted people. Materials and methods. The sample consisted of 289 people ages 18-38 (X = 23.7; SD = 5.26), of which 137 were female (47.4%) and 152 were male (52.6%). To identify Internet addiction, the Chen Internet Addiction Scale was used, as well as the 16-PF questionnaire (form C), which allows studying the individual psychological traits of a person. Descriptive statistics, the Kruskal–Wallis H, and the Spearman rank correlation coefficient were used for processing the data. Mathematical processing was carried out using IBM SPSS Statistics v. 17.0. Results. As a result of the study, it was revealed that an internet addicted adult is characterized by emotional instability, low rule-consciousness, high anxiety, traditionalism, low self-control and emotional tension. As the person becomes more addicted to the Internet, there is an increase in the quantitative indicators of these personal traits. Conclusion. Individual psychological traits of an internet addicted person have been determined, which can be used for the development and implementation of the corrective program for this type of addictive behavior.