Background:Nowadays, internet is being extensively used in all scientific, educational, business,cultural, and political areas. But there is growing concern about the addictive nature of the Internet and its side effects on cognitive functions. Aims and Objectives: This study was aimed to investigate the effect of mild to moderate level of Internet addiction on cognition by using computerised „Victoria Stroop Test (VST)‟. Materials and methods:This study was a cross- sectional study. Questionnaire for internet addiction test (IAT) and sleep quality were administered among 100 healthy adults. They were divided in two groups based on their internet use(45 subject with normal internet use and 55 with mild or moderate level of internet addiction) and matched for distribution of Age, Weight, Height, BMI and sleep quality.The Psychology ExperimentPEBL-Victoria Stroop Test was used to evaluate cognitive function. The Stroop effect was compared by independent t-test and multiple correlation analysis was performed for Stroop effect with all components of IAT usingIBM SPSS (version 28.0).