This study aims to examine the effect of religiosity, agreeableness, and age on adolescence’s prosocial behavior. This study selected the sample of 296 student, using a purposive sampling technique. The data collection used modification scale of Prosocialness Scale, Muslim Daily Religiosity Assessment Scale (MUDRAS), and International Personality Item Pool-Big Five Factors Model-50 (IPIP-BFM-50). Multiple regression and Confirmatory Factor Analysis (CFA) were performed to analyze the data. The finding showed there is a significant influence of religiosity, agreeableness, and age on prosocial behavior.