The article considers international legislation as an instrument in the process of establishment of Geoparks in Ukraine. Because the notion “geopark” is relatively new to Europe, and even newer to Ukraine, it is necessary to study the legal aspects of this issue. It was determined that the establishment of geoparks in Ukraine is hindered by numerous problems, particularly: absence of target-legislation, unproductive dialogue with authorities, from local to national and difficult economic conditions. We found that solving the problems should start from the assessment of state and international normative-regulatory acts and characterization of the impact of the latter in the legal field of Ukraine. We found that domestic scientific works do not have many references to the international legislation. Therefore, the necessity arises of developing an international “legal map” in the issue of protection of geoheritage. For this purpose, we analyzed 14,335 international documents relevant for the territory of Ukraine with their respect to their relationship to the protection of nature, natural and cultural heritage, out of which 79 were analyzed in detail. We determined the peculiarities, according to which the international legal acts can be identified and can characterize them by 3 groups: Treaties between states on collaboration; Treaties between states on particular natural objects; important international documents. We determined that 48 of them have different levels of importance in the issue of establishment of Geoparks. We determined that many international documents recommend, encourage, obligate the authorities to support protection of nature, the natural heritage, including geoheritage. With active use of such documents, it is possible to significantly advance in solving the abovementioned problems of establishing Geoparks. Most characterized normative-regulatory acts which are directly or indirectly related to natural objects and territories that could be included in future Geoparks, making them an important tool in preservation of geoheritage. The presented results correspond to all the recent changes in the legislation as at the beginning of 2019. The results can be used by scientists in the process of establishment of real Geoparks in Ukraine, as well for preservation of geological heritage in general.