The article by S. Prysukhin “The Principle of Subsidiarity: Lessons from the Social Teaching of the Catholic Church” analyzes the achievements of the Social Teaching of the Catholic Church, represented by the works of Leo XIII, Pius XI, Pius XII, John Paul II, revealing the meaningful characteristics of the concept of “the principle of subsidiarity”, its role and meaning in the system of Christian values. The principle of subsidiarity makes possible such relationships in social life, when the community of higher order does not interfere in the internal life of the community of the lower order, taking over the proper functions of that function; for the common good it gives it when necessary support and assistance, thereby coordinating its interaction with other social structures. The principle of subsidiarity guides social practice to the promotion of the common good in the human community. The spread and application of the principle of subsidiarity opposes the danger of "nationalization" of society and the most terrible manifestations of collectivism, restricts the absoluteization of power, bureaucratization of state and socio-cultural structures, becoming one of the guarantors of respect for the rights and freedoms of citizens of their country.