Abstract: The subject of this article is the influence of the ideas of E. Bellamy on the ideology of the populist party in the United States of America at the end of the 19th century. In this work, the author analyzes the influence of E. Bellamy’s ideas on the leaders of the populist party, identifies the scale of their prevalence among ordinary members of the populist movement, undertakes a comparative analysis of the ideological views of E. Bellamy and populist thinkers, and identifies the reasons for the popularity of E. Bellamy’s works among the party's leaders and ordinary members. Within the framework of this study, in order to assess the prevalence of E. Bellamy's ideas among populists, the author applies the methodology of the intellectual history approach, which involves analyzing the number of references to E. Bellamy in the speeches of populist leaders and in the populist party press, and locating the existence of his works in personal and public libraries, where the populist party was very popular. The author widely applies the comparative approach to compare the ideological views of populists and E. Bellamy. This work is the first study in Russian historiography that demonstrates the widespread prevalence and the degree of influence that E. Bellamy’s ideas had on members of the populist party, based on archival and published sources. The author concludes the article stating that the ideas of E. Bellamy were very popular among populists. There are many similarities in the views of E. Bellamy and in those of various populists. The populist leaders and E. Bellamy both considered the contemporary socio-economic and political system of the United State of America as unjust and only serving the interests of the rich strata of the population.