The article is dedicated to the study of the legal aspects of using aquatic bioresources in Ukraine and the impact of their usage on ensuring the country’s food security. It is argued that the issue of proper legal regulation of the use of aquatic bioresources is becoming increasingly relevant today. Attention is given to both legislative and scientific approaches to the issue of legal regulation of Ukraine’s food security. The necessity of adopting a separate law titled «On the Fundamentals of Food Security of Ukraine» is emphasized. It is noted that the state’s food policy should aim for the highest degree of self-sufficiency, as the quality and quantity of consumed food products directly impact the nation’s health, life expectancy, work capacity, and intellectual potential. The article examines the legal grounds for the usage of aquatic bioresources. The impact of the fishing industry on ensuring Ukraine’s food security is analyzed, with the conclusion drawn that the country’s food security largely depends on the state of aquatic bioresource usage. The level of fish consumption and its processed products serves as an indicator of the population’s food security, which should be maintained at a level conducive to physiological needs. It is stressed that the development of the fishing industry is one of the most important tasks for ensuring the post-war recovery of the country. The article identifies aquatic bioresources as a strategic state food reserve in the current context. The artificial reproduction of valuable fish species is aimed at both supporting aquatic ecosystems and building industrial stocks. The author asserts that today, food security is a condition for maintaining the state’s sovereignty, supporting high levels of public health, and developing the country’s economy. Emphasis is placed on the fact that the use of aquatic bioresources is crucial for the country in terms of ensuring food security, improving economic conditions, saturating the domestic market with quality food products, increasing employment and welfare, as well as preserving biodiversity and effectively using water and hydrobiological resources.