The article aims to substantiate the principles of institutional support for the development of eco-industrial parks in the conditions of formation of circular economy taking into account, the world experience. The methodological basis of the study is a systematic approach. It is based on the fact that the institutional support for the development of eco-industrial parks orients the actions of the authorities at different levels to establish certain norms, rules, restrictions, the order of their establishment and fulfillment in terms of achieving the goals of sustainable development, with interaction with the subjects of territorial communities. It is concluded that institutional support, should provide effective assistance in the development of public policies that underpin the eco-industrial parks, ensuring compliance with the rights and freedoms of business entities. In addition, the basis of institutional support for park development is based on a systemic approach, which is proposed in the form of a recurrent functional relationship. Measures aimed at ensuring institutional support for these parks are highlighted.