Abstract: The article analyzes the development of professional identity among police officers with different locus of control. The object of the study: employees of the internal affairs bodies. Subject of research: the influence of locus control on the development of professional identity of employees of internal affairs bodies. The relevance of the study is to determine the influence of locus of control on the development of professional identity in law enforcement officers. Professional development is a key problem in the psychological support of the personnel of the Ministry of Internal Affairs of Russia. The authors have revealed that the locus of control is of great importance in the life of employees of internal affairs bodies, as it is associated with the development of professional identity. Using a complex of psychodiagnostic techniques: "Personal and social identity" (A.A. Urbanovich), personal questionnaire "Who am I" (M. Kuhn, K. McPartland), personal questionnaire "Formal and meaningful identity" (E.V. Raspopin, E.A. Rybyakova), test "The level of subjective control" (J. Rotter, modification by E.F. Bazhin, E.A. Golynkina, L.M. Etkind) substantiates the existence of a relationship between the locus of control and professional identity in law enforcement officers. It is proved that the most effective is the average level of internality of the locus of control, which contributes to the professional identity of a law enforcement officer. The necessity of forming a professional identity taking into account the locus of control among employees of internal affairs bodies is discussed.