The end of the 19th - the beginning of the 20th century is a period of upsurge in the Evangelic movement: the number of supporters is gradually increasing, their activities are becoming more active and becoming institutionalized, at the beginning of the century new Protestant beliefs appear in America. Gradually, the rise of the Evangelic movement more and more covers European countries, and the Belarusian lands participate in the global process of the spread and development of late Protestantism. On the basis of documentary archival sources, the author analyzes the process of the emergence of Baptist, Evangelical Christians, Adventists and others Evangelicals in the context of the religious policy of the Russian Empire, as well as in the conditions of Soviet politics in the BSSR and Polish policy on the territory of Western Belarus. The article notes that the process of the emergence of new Evangelic denominations in the late 19th - early 20th century in the western regions of Belarus takes place later than in the eastern ones. The later development of Baptism and other late Protestant denominations in Western Belarus was primarily associated with the spread of Evangelicals through the Western Ukrainian, Polish and Baltic lands, in contrast to the eastern part of Belarus, which has close ties with Russian lands and experienced a stronger influence of Russian Protestantism at the end of the 19th century. Geopolitical and political changes that took place during the First World War and Russian revolutions, in particular the establishment of the Soviet regime and the conclusion of the Riga Peace Treaty, according to which the territories of Belarus were divided into two parts, became the main trigger and played a decisive role in the development of the Evangelical movement. Firstly, in connection with the division of Belarus into western and eastern parts, the annexation of Western Belarus to Poland, active anti-religious campaigns in Soviet Russia and the creation of the “Iron Curtain” in 1929, the organizational orientation of Western Belarusian communities to the West changed. Secondly, geopolitical transformations and differentiation of the strategy of religious policy in the BSSR and in Western Belarus, the development processes of the movement predetermined the formation of the modern landscape of the evangelical movement - a pronounced religiosity of the western region and the presence of a large number of religious communities and a gradual decrease in these indicators towards the eastern border of Belarus.