The main aim of the study was to examine the determinants of sleep problems including Facebook intrusion, depression, and future time perspective. The participants were 426 adolescents, aged M = 14.68. The Future Time Perspective Scale, the Center for Epidemiologic Studies Depression Scale, the Facebook Intrusion Questionnaire, and the Medical Outcomes Study Sleep Scale were used. It was found that FTP goals were a negative predictor of Facebook intrusion and depression was a positive predictor of Facebook intrusion and sleep problems. Additionally, Facebook intrusion turned out to contribute positively to sleep problems. The results contribute to knowledge on excessive social media use and its relations with mental health; they can be applied in the treatment of addictive social media use.