Neochristianity in Brazil was an attempt to restore Catholicism in Brazil, in tandem with the movement of the Universal Church. This paper analyzes the deeds by the second Brazilian Cardinal Archbishop Sebastião Leme da Silveira Cintra and his contribution to Brazil’s Catholic Church between 1920 and 1940. During this process, Archbishop Leme exercised enormous influence on Brazil s Church by making use of the culture, mass media, his approach to the Government and his call both to the masses and the literate. His was the most expressive Episcopacy in the country to try to revitalize the values and the Catholic sentiment in the modern Brazilian society. By means of a program fully aligned with the Universal Church, the Cardinal made a tremendous progress in different aspects of the society looking to implement and reform the Catholic spirit. Consequently, he implemented religious laws and practices, fostered and increased the devotion to Eucharist, the Sacred Heart, Our Lady and love and obedience to the Pope. The concept of Neochristianity is key to understand modern Catholicism and the discussions about modernity. It is analyzed under the influence of Pope Leo XIII s pontificate and further deepened with the pontificates of Pius X, Benedict XV and Pius XI. Therefore, Neochristianity in Brazil is understood from the characteristics of the Roman Church and localized to Brazilian reality. The research is supported by a wide bibliography, the acts of pastoral visits, diocesan notices and memos, published articles related to the topic, study of documents in the archives of the Archdioceses of Curitiba, São Paulo and mainly Rio de Janeiro. This research is focalized in the relationship Church-State in the aforementioned period, the relationship of ecclesiastic hierarchy with the lay faithful and the efforts of an intellectual elite to install a neochristianity in Brazil.