Main problem: In a market economy and competition, the business reputation of legal entities becomes a critical factor for their stability and trust from partners and clients. In Kazakhstan, issues of protecting the business reputation of legal entities require further improvement in legislation. Purpose: Definition of the concept of business reputation of legal entities, analysis of the current state of legal protection of this institution in Kazakhstan and the formation of proposals to consolidate the definition of business reputation in the Civil Code of the Republic of Kazakhstan. Methods: The study was conducted using the following methods: review of legislation (analysis of the provisions of the Civil Code of the Republic of Kazakhstan and regulatory decisions of the Supreme Court of the Republic of Kazakhstan), comparative legal method (comparison of the legislation of Kazakhstan with the legal norms of other countries to identify general trends), formal legal method (definition of legal concepts and their characteristics). Results and their significance: The study showed that the business reputation of legal entities in Kazakhstan is recognized as a personal non-property benefit, but requires a clear regulatory definition. An analysis of legislation and judicial practice revealed the need to amend the Civil Code of the Republic of Kazakhstan to more fully reflect the essence and mechanisms for protecting business reputation. Specific recommendations are proposed to improve legal regulation, which helps to strengthen confidence in legal entities, increase investment attractiveness and stability of civil turnover in Kazakhstan. In particular, it is proposed to enshrine in the Civil Code of the Republic of Kazakhstan the following definition of the concept of business reputation of a legal entity: “a positive assessment of the entrepreneurial, social, professional or other activities of legal entities, which are carried out by such persons as participants in public relations.” The introduction of these changes will also help reduce the number of litigation related to business reputation and provide more effective protection of the rights of legal entities. Increasing the level of legal certainty and protection of business reputation will contribute to the development of a competitive environment and support for bona fide market participants