The article defines the essence and structure of the dairy subcomplex as an important component of the agro-industrial complex of Ukraine, focusing on changes in its localization with the outbreak of full-scale military operations. The results of the functioning of its main sectors: cattle breeding and production of dairy raw materials, milk processing, export-import commodity operations with dairy products and the sphere of consumption are investigated. It is found that Lviv region, with its considerable potential, does not show good results in the domestic market of raw milk, but due to its territorial remoteness from the area of direct hostilities, it has to some extent strengthened its competitive position in this market. There are significant differences in the structure of raw milk production in the region compared to the national figures, and the same disproportions are typical for foreign trade operations with dairy products. At the same time, there are a significant number of milk processing enterprises operating in the region, both local, interregional and national. The analysis of the situation showed that over the past five years, there have been steady deterioration trends in almost all sectors of the dairy subcomplex in Lviv region. These include high costs of keeping livestock, reduced livestock numbers (especially in households), lower milk yields, difficulty ensuring high quality raw milk and sufficient quantities in private households, unfavourable pricing policy on the foreign dairy market, low solvency of the population, negative demographic changes, and a difficult security situation due to the ongoing military operations in the country, a serious shortage of energy resources, which makes it difficult or even impossible to ensure the proper quality of dairy products in the supply chain. To support domestic dairy producers in the region, programs are being implemented to support farming and small manufacturing businesses, numerous grants are being provided, and production cooperation is taking place with the involvement of foreign private and public investment, which is yielding positive results. Also, the dairy industry in Lviv region actively promotes its products in the retail market, which ensures high ratings throughout the country, and is engaged in both meeting the needs of defenders and their social support.