As nowadays education documents on changes in teachers‘ training put forward the need for teachers probationary as well as for the creation of licensing system in Lithuania, the questions of the notion of concept of patronage for teachers working for the first year as well as student teachers become extremely topical as does the analysis of the system of training for teachers’ mentors in various countries of the world. In the present MA paper the notion of mentors is analyzed as well as the training systems in Lithuania and Western Europe. The experience of the USA in training mentors is also overviewed. The aim of the paper is to disclose the evolution of the ideas for training mentors and to analyze the modern tendencies in mentors’ training in Lithuania and Western Europe. This is the reason why the notion of historical evolution of mentors’ training as well as the practice of mentors’ training and the tendencies in Lithuania and Western Europe are being analyzed in the paper. Modern ideas for mentors’ training and the experience of Lithuania are also overviewed in the paper. The following methods are used for the research: the analysis of scientific and pedagogical literature, education documents and periodical press as well as electronic data base analysis, the comparative analysis and summing up of the documents compiled.