The aim of this study was to examine the psychometric properties of the Social Efficacy and Outcome Expectations Scale (SEOES) on Turkish. The sample group included two groups of university students (ns = 440, 359). The validity of the scale was assessed using exploratory factor analysis, confirmatory factor analysis and concurrent validity, and the reliability was assessed using Cronbach Alpha's internal consistency coefficient, test-retest method and item discrimination. The findings obtained from the exploratory factor analysis showed that 51.2 percent of total variance of the scale was explained and the scale consisted of two sub-dimensions like the original one. Confirmatory factor analysis indicated an acceptable fit to the data. The concurrent validity of the SEOES was respectively studied using (0.65) Scale of Perceived Social Self-Efficacy; (0.29) Satisfaction With Life Scale; and (-0.36) UCLA Loneliness Scale. As for the scale's reliability, the internal consistency was determined to be 0.91; 0.92 for Social Efficacy Scale; and 0.81 for Outcome Expectations Scale. The results of test-retest result (0.90) and the findings of item analysis showed that the items in Turkish version of the scales were compatible with the original one. The present results provide evidence supporting the validity and reliability Turkish version of the SEOES.