The economics of the industry is not only theoretical, but also applied science. It should help management personnel to perform the function of justifying their decisions in the field of managing the economic processes of the development of the economy of the industry and the enterprise in particular. This textbook discusses the fundamentals of the economy of an enterprise as the main subject of the economy of the industry, the organizational and production foundations of the functioning of the enterprise in market conditions, its organizational and production structure, as well as the economic potential of the enterprise, the methodology for its calculation, the essence of the main technical and economic indicators of the enterprise.