Professionalism is a professional work ethic that refers to the behavior of Indonesian National Police personnel based on competence and expertise. Work discipline is the ability to control one’s own behavior in accordance with established regulations. Performance is the work output achieved by an individual in carrying out their duties based on competence, effort, and opportunity. The objectives of this study are as follows: To determine whether work professionalism and work discipline jointly influence the performance of Indonesian National Police personnel in the Human Resources Division (SSDM). The sampling technique used in this study is random sampling. According to Slovin’s Theory as cited in Husein Umar (2020), the population of 609 Indonesian National Police personnel each has an equal chance of being selected as a random sample; however, the sample size for this study is 86 individuals. The research findings indicate that, both partially and simultaneously, there is a positive and significant influence of Work Professionalism and Work Discipline on the Performance of Indonesian National Police Personnel. In light of these findings, the following recommendations are made: 1) Leadership is encouraged to pay greater attention to Work Professionalism, Work Discipline, and the Performance of Indonesian National Police Personnel in accordance with organizational objectives and the available human resources within that specific field. 2) Good work discipline within the organization should be maintained in all aspects, including adherence to all work programs. 3) Future researchers are encouraged to measure work discipline by incorporating additional variables beyond those included in this study.