The purpose of the present study is to examine the impact of personality traits (big five) on organizational commitment (affective commitment, continuance commitment and normative commitment). Respondents of the present study constituted University academia from three public sector Universities of Southern Punjab, Pakistan. Multiple regression analysis was performed to test the hypotheses. Results identified the significant impact of agreeableness towards the development of affective commitment and continuance commitment; however, insignificant association was recognized between agreeableness and normative commitment. Results of the study also indicated that conscientiousness and extraversion have profound impact towards all three types of organizational commitment. Neuroticism was found to be significantly associated with only affective commitment. And openness to experience contributed towards the development of affective commitment and normative commitment. Inclusion of big five personality analysis during recruitment test of employees will help human resource department towards the selection of committed work force. Moreover, findings of the study also provides insights for developing policies regarding performance appraisal, training, coaching and mentoring to enhance organizational commitment and retain required employees with different personality traits. The theoretical contribution of this study rests in its comprehensive approach enclosing impact all big five personality traits towards three components of organizational commitment in the context of University academia of Southern Punjab.