The article describes the results of a study on a student sample of the relationship between the feelings of subjective loneliness and Internet and social media addiction. In the article are used following diagnostic methods: «Diff erential questionnaire of the experience of loneliness (DOPO-3)», «Methodology for assessing changes in psychological boundaries when using technical means (MIG-TS-2)», «The Generalized Problematic Internet Use Scale 3 (GPIUS-3)». As a result of the study it was found the link between indicators of feelings of subjective loneliness and indicators of psychological Internet and social media addiction.