Recent research has identified several risk factors for phubbing behavior. However, limited research has investigated the potential influence of  Fear of Missing out FoMO and phubbing on Social networking site addiction (SNS addiction) and little is known about the mediating mechanisms underlying this association. In this study, we investigated the predictive role of Fear of Missing out behavior on university students' phubbingbehaviour  and found that both Fear of missing out and SNS addiction were associated with phubbing behaviour. A sample of 301 Indian university students (17-23 years old, M age = 19.6 years, SD = 1.24) reported addiction to Social networking site, Fear of missing out and phubbing behaviour. Results showed that (a) fomo was positively correlated with phubbing behavior; (b)SNS addictionwas positively correlated with Phubbing behavior.These findings have important implications for the prevention and intervention of phubbing behaviour among university students.