Data is a critical driving force for industrial development and new value creation in the fourth industrial revolution era. As a result, the government's disclosure of data to the public has become an issue worldwide, leading to an increase in the trend of open data. Simultaneously, in providing and using data due to open data policies, disputes increasingly arise due to the refusal or discontinuation of data provided by public institutions. To solve this problem, policies were introduced to mediate disputes over the provision of public data. This paper analyzes the policies on Mediation of Disputes over the Provision of Public Data, which is part of The Republic of Korea's open data policy, and its cases, and examines the current policies on Mediation of Disputes over the Provision of Public Data in The Republic of Korea. It also uses the OECD's Open, Useful, Reusable (OUR) Data Index and WWW Foundation's Open Data Barometer (ODB) to identify The Republic of Korea's policies on Mediation of Disputes over Provision of Public Data and to identify its excellence and improvements. It can be seen as the first paper to use two globally accepted indexes to analyze cases of public data dispute mediation, identify current circumstances, and present their excellence and direction of improvement. At the same time, we explain to the open government latecomers what they should benchmark through The Republic of Korean cases.