The subject of the study is the system of relations between the EAEU member states and the Green Climate Fund in the field of financial support for climate programs and projects. The purpose of the study is to substantiate the model of coordinated interaction between the EAEU member states and the Green Climate Fund as one of the directions of the Union's climate agenda. The study demonstrated that several EAEU member states (Kyrgyzstan, Kazakhstan and Armenia) are actively implementing programs and projects supported by the Fund, which not only relate to various sectors, but also to the formation of a mature climate policy of these states. This group of States is at the stage of transition to a mature institutional phase of interaction with the fund. The author examines in detail the climate policy and the state of climate finance in these states. It has been established that another group of EAEU states (Russia and Belarus) do not participate in the Foundation's projects, but maintain specific relations with it. The methodological base of the research includes the following methods and approaches: historical and comparative methods, a systematic approach, a method of discursive analysis, a predictive method. The main conclusion of the study is that despite the difference in relations between the EAEU states and the Fund as a whole, the Union's climate agenda involves interaction with the Fund at the integration level as an international track for positioning the Union. The essence of this track is to expand integration into interaction with the global climate finance system in general and its individual structures in particular. The novelty of the study lies in the fact that for the first time in a comparative way, at the level of a thorough and comprehensive scientific study, an analysis of the interaction of the EAEU states with the Fund was carried out. It has been established that the CCF, at the level of supported programs and projects, not only contributes to the improvement of the climate policy of the member states, but also contributes to the development of the base of climate technologies in the Eurasian space. The contribution of the article to the subject area of research is the prediction of the Fund's importance in the implementation of the EAEU climate agenda and support for integration climate projects.