Culturally competent healthcare professionals are important in improving the quality of health care. The lack of a measurement tool in the literature that evaluates the cultural competence of the multidisciplinary team in primary health care is noteworthy. The aim of this study is to develop a Primary Health Care Professionals' Cultural Competency Scale (PHCP-CCS) by adapting the Nurse Cultural Competency Scale (NCCS) developed by Perng and Watson (2012), and to examine the various factors affecting cultural competency in Turkey. A total of 231 health professionals, including family doctors, family health nurses and community health professionals, participated in this study. In the item analysis, the correlations of the items with the total score varied between .60 and 82. Exploratory factor analysis revealed a three-factor structure that explained 73.5% of total variance. Items 1-8 of the PHCP-CCS were included under the heading "Cultural Skills," items 9-16 under "Cultural Knowledge" and items 17-20 under "Cultural Sensitivity." Cronbach's Alpha coefficient for the overall scale was .84 and was calculated as .78, .76 and .87 for the respective factors. The experiences of the participants were grouped and compared for discriminant validity. It was found that being able to speak different languages, having contact with friends and neighbors from different cultures, and being educated about serving people from various cultures increased the cultural competency of primary health professionals. In addition, the PHCP-CCS scores of all the primary health professionals who were happy to be working with migrants and refugees were considerably higher. The results show that PHCP-CCS is a measurement tool that can be used to determine cultural competency among primary health care workers. In addition, the scale is also suitable for use in the clinical field for all professionals providing health services to the individual, families and the community.