This article is devoted to revealing the ideological essence of Siberian regionalism. On the basis of current approaches to the definition of the nature of political ideologies the publication shows that regionalism is related to Russian traditional ideologies. The author found out that the essence of the traditional democratic regionalism is expressed in the practical orientation of this conceptual scheme. This paper shows that the ideological essence of regionalism cannot be limited to practical orientation of Siberian regionalism school of thought. This ideology serving as a solid basis of group identity is aimed at introducing certain criteria of evaluation of the past, present and future into the mass consciousness. Related to ideologies, regionalism illustrates the style of thinking promoted by the ideology of regionalism, which excludes any manifestations of nationalism and cosmopolitanism.