The article is aimed at assessing the state of food security of Ukraine. The level of food security in Ukraine is checked according to the internal system of parameters and international methodologies. Analysis of the level of food security in Ukraine by the Global Food Security Index shows that it lags far behind not only the leading countries but also from neighboring countries. The situation requires consideration of not only existing but also promising challenges and threats to the maintenance of food security. In the future, this will increase the competitiveness of agricultural enterprises in the global food market. To achieve this goal, general scientific and special research methods were used, the main of which are the following: dialectics, scientific abstraction, statistical, and graphic analysis. The study substantiates the use of a methodology for assessing food security, which involves the calculation of four components and an integral index of food security of the state. As a result of the use of the proposed methodology, an assessment of the state of food security of Ukraine is implemented. The obtained results served to compare them with similar indicators of the countries of the world and Europe. The calculations show that food security, first of all, should be considered from the standpoint of ensuring economic security, taking into account the fact that the latter reveals internal opportunities and determines strategic alternatives to socio-economic growth to ensure public welfare under conditions of market relations. The article proposes tools for strengthening food security based on compliance with the requirements of the principles of ensuring food security, including self-sufficiency, multifunctionality, social justice, independence, stability, balance and rationality. To strengthen food security, it is proposed to strengthen such components as physical accessibility and economic accessibility of food, as they guarantee the quality and safety of agriculture, and it is also worth paying attention to improving natural resources and sustainability. The challenges and problems of the domestic agro-industrial complex, which plays a significant role in the world market and ensures food security, are analyzed. Measures to ensure increased food security are proposed.