It is emphasized that in order to fulfill the tasks assigned to the National Police of Ukraine, a stable and highly professional staff is required, capable of properly responding to the challenges and threats in the sphere of internal affairs. Therefore, the purpose of the article is to identify and summarize the system of principles of public administration of personnel support of the National Police of Ukraine on the basis of the theory of administrative law, the analysis of relevant normative-legal domestic and foreign acts, works of scientists and other sources. Thus, in the scientific work the system of principles of public administration of personnel support of the National Police of Ukraine was identified and described as the basic principles of the realization of public power in order to satisfy the society with professional, conscientious, ethically educated police officers, who can potentially carry out preventive activities and restore the rights and freedoms of the process crimes. It is determined that the principles of public administration of personnel of the National Police of Ukraine are the basic provisions, guiding ideas, norms of behavior, which are formulated in the form of a certain scientific provision and are fixed mainly in the legal form, reflect the content, structure, forms and methods of public administration of human resources for law enforcement agencies for the purpose of satisfying the public with professional, conscientious, ethically educated police officers to carry out the tasks assigned to the bodies and units of the National Ukrainian police. It is concluded that the principles of staffing of the National Police of Ukraine should be divided into general (rule of law, legality, political neutrality, integrity, transparency and openness, interaction with the public, patriotism, science, efficiency, competence) and functional-managerial principles (hierarchical, distribution of powers, collegiality and sole command, accountability, quality staffing of the National Police bodies to ensure legal and social workers, etc.).