Purpose: To assess the psychometric properties of the Social Phobia Inventory (SPIN), and evaluate the indirect effect of social phobia between perfectionism and life satisfaction (LS).Methods: A cross-sectional study enrolled 683 Lebanese adults (April-May 2021). Results:The confirmatory factor analysis results confirmed the one-factor solution of the SPIN items (Cronbach's alpha = 0.92). Social phobia had an indirect effect in the association between rigid, self-critical, and narcissistic perfectionism and life satisfaction.Practice Implications: The study results confirm the psychometric properties of the SPIN to assess social phobia and constitute a preliminary database of the variables that interplay with LS in the Lebanese population. Future studies should suggest clinical tools and techniques to cope with anxiety or reduce perfectionism to enhance LS.