Abstract
The article discusses a little-known missionary project of the reign of Catherine II "A new institution for the conversion of non-believers". Its development was closely connected with the change of the confessional policy of the Empress. After the abolition of the Novokreschenskaya office, diocesan preachers were established, whose purpose was to continue the spread of Christianity among the peoples of Russia. The activities of some preachers caused reproaches from the supreme church authorities. This led to the idea of developing a project to organize the activities of preachers. The project was a model of the best organization of missionary work within the entire empire, but its approbation had to be carried out in Siberia. In case of successful implementation, the project could become a guiding principle for missionaries of other dioceses of Russia.