Problem:There are few studies worldwide that tried to investigate a relationship between personality and police stress. These studies reported significant relationship among personality traits and police stress. However, most of the studies are conducted in western context, and there are few studies conducted in African setting that show the pattern of relationship among personality traits and police stress. This study therefore, aimed to assess the relationship personally has with police occupational stress in the Ethiopian context. Approach:A cross-sectional correlational method was employed in this study. Using a stratified sampling technique, 401, police officers, of which 22.9% are females, were selected and completed the survey. Police Stress Questionnaire and the Neuroticism-Extraversion-Openness Five-Factor Inventory were used to collect data.Findings:Officers in the Ethiopian Federal Police Commission experienced a high level of occupational stress, where organizational stress (M=3.99) is found to be higher than operational stress (M=3.88). Neuroticism was found to have a significant positive correlation with organizational and operational police stress (r=.163 and .196) respectively.  Similarly, significant positive the relationship was observed between agreeableness and police organizational stress (r=.316) and police operational stress (r=.226). Conscientiousness was also found to have a significant positive association with organizational police stress (.279) and police operational stress (.179). Organizational police stress was also found to have a significant negative association with extroversion and openness (r=-.137 andr=-.160) respectively. Extroversion and openness did not have a significant association with operational police stress. The regression analysis showed that four of the personality traits (neuroticism, extroversion, agreeableness and conscientiousness) significantly predicted both police organizational and operational stress, but not openness. Conclusion:It can be concluded that personality traits are significant predictors of police organizational and operational stress in the Ethiopian Federal Police.Police organizations should work towards understanding the relationship among personality traits and occupational stress, consider personality types on recruitment and assign police officers to tasks fit their personalities so that to increase performance and serve the public in a better way.