This study aimed to examine differences in social media addiction (SMA) among young adults based on sociodemographic variables (sex, relationship status) and social media usage characteristics (platform type, daily usage time). A convenience sample of 120 young adults aged 18–30 years participated in a cross-sectional online survey. Social media addiction was measured using the Bergen Social Media Addiction Scale (BSMAS). Results indicated that Instagram users exhibited significantly higher SMA scores than Snapchat users, highlighting platformspecific addiction risk. A positive doseresponse relationship was found between daily social media use and addiction severity. Relationship status influenced SMA, with individuals in ―complicated‖ romantic situations showing markedly higher addiction scores compared to single or partnered participants. No significant sex differences were observed. These findings underscore the multifaceted nature of social media addiction, emphasising the importance of behavioural and contextual factors in understanding and addressing SMA among young adults. Targeted prevention and intervention strategies should consider platform features, usage intensity, and relational contexts.