<p>The use of social media is rapidly increasing, particularly among emerging adults. Therefore, it has become crucial to investigate the elements associated with social media addiction, a significant phenomenon in this era, and the interplay between them. In this regard, the current study investigates the mediating roles of mindfulness and satisfaction with family life between social media addiction and mental well-being. University students were taken as a sample and completed self-reported measures of mental well-being, social media addiction, mindfulness, and satisfaction with family life. The suggested serial mediating model is supported by the results. Stated differently, lower levels of social media addiction were associated with higher mindfulness, which was in turn related to greater satisfaction with family life and ultimately linked to higher levels of mental well-being. These findings have implications for research and practice that should be considered, helping to clarify the psychological associations of social media use and drawing attention to variables that contribute to its relationship with mental health.</p>