The study considers theoretical and practical aspects of the administrative and legal implementation of the rights of business entities based on the current legislation and regulatory requirements of the European Union from the perspective of the modern theory of state and law and administrative law. The relevance of the subject matter is conditioned by the need to improve legislation for the purpose of a comprehensive theoretical substantiation for improving the efficiency of the implementation of rights by business entities in the context of the transformation of the Ukrainian economy. The purpose of the study is to investigate the implementation of the rights of business entities. The study applied the methodology of a systematic comprehensive analysis of legal phenomena using factor and evolutionary research methods. It is indicated that the activities of public administration bodies have public legal goals (law enforcement, regulatory, fiscal, and accounting). One of the activities of public administration bodies is to ensure the implementation of the rights of business entities. The specific features of administrative and legal implementation of business rights by public administration bodies are considered. It is indicated that this activity is implemented by issuing individual administrative legal acts or performing certain administrative actions. Implementation methods (registration, licensing procedures, certification, and accreditation) are considered. The content of technical regulation is disclosed, including the development and adoption of technical regulations, rules, standardisation, conformity assessment, quotas. The role and significance of state supervision and control in the sphere of entrepreneurial activity as a way of administrative and legal support for the implementation of the rights of business entities is substantiated. The role of administrative procedure law and administrative procedure for the administrative and legal implementation of the rights of business entities is indicated. The study is aimed at improving the norms of administrative law regarding the implementation of the rights of business entities.