The present study was carried out on post-graduate students of Central University of Kashmir to investigate the impact of social media on their academic achievement. 120 post-graduate students studying in semester third from School of Education Central University of Kashmir selected randomly constituted the sample for study. Self-constructed questionnaire on social media and previous semester academic grades of post-graduate students were taken for data collection. Descriptive analysis including percentage and comparative analysis including t-test were taken as statistical treatments for the study. The study has concluded that majority of post-graduate students were found social media users and the usage of social media has significantly influenced their academic achievement.