The article is devoted to the study of the reformation history in Finland. The political and economic conditions that influenced the reformation in the country are examined. The features of the reformation in Finland related to the national mentality and the historical fate of the people are analyzed. The role of the state and the impact of the political and religious figures on the reformation processes are revealed. The stages of the Finnish reformation and their content are studied. The results and significance of the reformation for the status of the Finnish people, the formation of national identity and development are determined.