In the work „Tolerance as a component of communicative competence of a teacher” the meaning of communicative competence and tolerance in teacher’s professional activity is being described. A teacher is been laid a lot of functions on connected with bringing up and educating of a growing generation as well as educational establishments are the most important institutions of socialization. That’s why a through attention is drawn to teacher’s work from the side of psychological and pedagogical science. Professional qualities of a teacher were and remain an object of studying of such psychologists as N.D. Leviton, F.N. Gonobolin, A.A. Leontiev, N.A. Aminov, B.A. Krutetsky, A.A. Rean. Many qualities of a teacher are realized in a process of professional/pedagogical communication. It is hard to connect tolerance with some definite and traditionally pinpointed kind of teachers activity, both in communication and pedagogical practice. Tolerance, being realized in relations, including interpersonal, must be reflected in teacher’s skill, connected with communication. The author of the article considers the teachers working today in professional educational institutions, sometimes have a low level of communicative competence and tolerance, which is not enough for today’s demands in education. It is possible to correct the situation by using psychologists who work in educational establishments. They can take a function of organizers of this kind of activity, directed to developing and correcting communicative competence and tolerance of teachers. Unfortunately, there are no definite criteria about the essence and structure of these phenomena as well as the factors, which influence them.