The study investigated the organizational culture on employee's performance: A perspective of Uganda Police Force Kampala District. The distinct objective that guided the study was: to assess the relationship between organizational culture and employee performance in Uganda Police Force. A descriptive correlative investigation research design was assumed by means of both quantitative and qualitative approaches. The study targeted 252 respondents. Simple random sampling and purposive techniques were used to select the participants. Data analysis involved frequencies, means and inferential statistics such as correlations and the coefficient of determination. The study findings revealed a positive relationship between organizational culture and employee performance at Uganda Police Force. It was therefore concluded that organizational culture positively influenced the employee performance of Uganda Police Force. The study therefore, recommends that the top leadership of Uganda Police Force management should build and improve on teamwork and develop the current leadership to maintain the culture.