Personality disorders (PD) are a significant clinical and social problem associated with a substantial financial burden. However, data on the prevalence of different PD types remain controversial due to different approaches to diagnosis and classification. Excessive diagnostic overlap, instability of PD diagnoses over time and poor diagnostic agreement called into question the clinical utility of the previously dominant categorical approach. In the last decade, classifiers of mental disorders have gradually switched to the dimensional assessment of these conditions. As a part of this approach, a short 25-item version of the Personality Disorders questionnaire for DSM-5 (PID-5-BF) was created to assess maladaptive personality traits. This work aims to conduct a Russian-language linguocultural adaptation of this tool and study its psychometric properties in the Russian population of patients with non-psychotic mental disorders (NPMD). As statistical methods, exploratory modeling by structural equations, assessment of the Kaiser-Meyer-Olkin sampling adequacy criterion, and Bartlett's sphericity criterion were used, and the number of factors was determined using parallel analysis. Coherence of fit criteria was calculated using the weighted least squares method, corrected for the mean and variance, with oblique equimax rotation. The study results indicate good psychometric properties of the questionnaire and confirm the transcultural nature of pathological personality traits detected using PID-5-BF. Furthermore, the Russian version of PID-5-BF showed good internal consistency in the entire questionnaire. In addition, it retained the five-factor model of pathological personality domains presented in DSM-5, which the authors of the original version proposed. Thus, the questionnaire can be used in clinical practice and for research in Russian-speaking patients.