In the article, the author defines the concept of ethno-cultural competence of a teacher, his or her ability to organize a dialogue of original cultures. The purpose of the article is to study the concept of ethno-cultural competence of a foreign language teacher in the context of intercultural communication. Methods: consideration of the provisions of materialistic philosophy on the harmony of national, interethnic and universal and dialectical unity of form and content; analysis of the main provisions of the competence approach, theories and practices of personal development; review of philosophical, cultural, sociological, psychological and pedagogical provisions. The theoretical basis consists of the ideas of prospects for development and formation in the system of moral and ethical priorities, the ideas of socio-cultural modernization of education, multicultural education and upbringing, ethno-cultural education, and the theory of cultural dialogue. As a result of the analysis, the author concludes that the training and upbringing of a globally thinking citizen who knows the cultures and traditions of his or her people is achieved in the process of interaction of a foreign language teacher with representatives of various original cultures. According to the author, only in this case the teacher can improve his or her skills and develop competencies in the field of ethnic culture. The author sees a possible solution to the issue of developing the ethno-cultural competence of teachers in the creation of training sites and offers a number of pedagogical tutorials on the research topic. The key point is to train competent teachers who are able to arouse students' curiosity about their native ethnic culture and take into account the possibilities of interaction, mutual respect, and interpenetration of cultures.