ABSTRACTThis study was conducted to find out the relationship between social anxiety and problematic internet use among university students. It was also tried to find out the difference between demographic variables like gender and locality. 200 university students were selected from Tripura University, in Tripura State through simple random sampling technique. Problematic Internet Use Questionnaire (Tatcher & Goolam, 2005) and Social Anxiety Questionnaire for Adults (SAQ-A30) developed by Callallo, Salazar, Irurtia, Arias and CISO-A Research Team, 2010 were used for data collection. The obtained results revealed that there is a positive relationship between problematic internet use and social anxiety. Males were found to have more social anxiety and problematic internet use. Further it is found that there is no significant different between Problematic Internet use on the basis of locality, but were found significant different social anxiety. Keywords: Problematic Internet Use, Social Anxiety, Gender and Locality